US1555280A - Machine for cutting spacers or slugs - Google Patents

Description

Sept, 29, 1925. 1,555,280

- F. V. DUNHAM MACHINE FOR CUTTING SPACERS OR SILUGS 51195 Dec. 20. 1924 2 sheets-sheet 41 a W v Q" m '91 5 "III mum Q I N gnwntoz Sept. 29, 1925. 1,555,280

F. v. DUNHAM momma: FOR cunme 'SPAGERS 'on swes Fi-led Doc. 20. 1924 2 Sheets-Sheet 2 F v 3 Patented UNITED STATES PATENT OFFICE.

FRANK VIRGIL DUNHAM, OF WICHITA, KA1\TSAS.

MACHINE FOR CUTTING 'SPACERS OR SLUGS.

Application filed. December 20, 1924. Serial No. 757,143.

To all whom it may concern:

Be it known that I, FRANK VIRGIL DUN- HAM, a citizen of the United States, resid- 7 ing at Wichita, and State of Kansas,

in the county of Sedgwick have invented certain new and useful Improvements in Machines for Cutting Spacers or Slugs, of which the following i had to the This invention relates s a specification, reference being accompanying drawings.

to machines for cutting strips of metal transversely of the length of the strips into small pieces, and

particularly to a machine designed for the purpose of cutting printers rules, brasses or slugs from type metal.

I One of the objects machine of this character which provide a is simple,

either by power out rules, brasses,

thin metal molded on A further object is to provide a device of this character which for other purposes of metal mg and in brass or copper strips or from of the invention is to which may be readily operated or hand, and which will slugs or other spacers of much faster than they can be a monotype machine. 1

is adapted to cut strips than for printwhich the length of the cuts may be regulated to a nicety.

A still further object is chine of this character in which the strip of thin metal may be mounted upon a reel and this strip the cutting of the mov will be automatically fed to knives upon each reoiprocatlon able cutting knife.

Other objects will appear in the course of the following description.

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invention is illustrated in the accom panying' drawings, wherein Figure 1 is a longitudinal sectional view of a strip cutting machine constructed in accordance w ing knife;

Figure 3 ith my invention;

fragmentary perspective is a perspective view of the upper or fixed knife Figure 4 is a top plan view of the construction shown in Figure 1;

Figure 5 Flgure 6 is an end, elevation of the same; s a fragmentary top plan v1ew to provide a ma on an enlarged scale showing the knives and guides with the movable knife retracted;

Figure 7 is a like view to Figure 6 but showing the movable knife shifted forward;

. Figure 8 is a fragmentary top plan view 0f the roller 38 and the yoke for supporting the same;

Figure 9 is an elevation partly in section showing one of the bearings for the roller 35.

Referring to these drawings, 10 designates a base or table having legs 11, the legs preferably being angular in form and being formed at their lower ends with feet 12 whereby they may be attached to the floor. Mounted in bearings 13 at one end ofthis table is a transverse shaft 1 1 carrying at one end the means for rotating the shaft, shown as a crank wheel 15. I have shown this wheel grooved to indicate that it might also be driven by a pulley from any source 7 of power.

Mounted upon the shaft 1 1 is aneccentric 16. Operating between longitudinally extending guides 17 is a longitudinally movable knife 18, and pivotally connected to the upper face of this knife by a bearing 19 is the yoke 20 of an eccentric rod 21. This rod extends rearward and is connected to the eccentric ring 22 which, of course, surrounds the eccentric 16. Obviously, as the shaft 1 k is rotated, the eccentric will rotate and will reciprocate the rod 21 and the knife 18 be-- tween the guides 17. This knife 18 is cut away upon its under face at its forward end, as at 23, for apurpose to be later stated. The 5 guides 17 extend longitudinally of the table, and mounted upon these guides and extending transversely of the table is the fixed knife 24:. The face of this knife which faces the shaft 1a is recessed, as at 25, the rear wall of the recess extending downward and forward. The lower knife has side walls 26 extending beyond the end face of the knife and operating against the inner faces of the knife guides 17.

It will be obvious now that as the shaft 14 rotates, the movable knife 17 will be re ciprocated past the lower or cutting edge of the fixed knife and that any strip of metal inserted in the recess 25 and fed down- 10 Ward below the lower edge of this fixed knife will be cut off and that the length of the portion thus cut off will depend upon the extent to which the strip is forced downward through this recess 25.

For the purpose of feeding a strip of material automatically downward past the cutting edges of the knives, I mount upon uprights 27 a shaft 28 carrying a reel 29, this reel consisting of a cylindrical body and side walls of any ordinary or suitable description. Upon this reel the thin sheet metal is wound. Carried upon the uprights 27 is a supporting plate 30, and carried upon this supporting plate are the guides 31. A strip of metal A from which the rule is to be made is fed downward from this reel 29 through the recess 25. This feeding is accomplished by means of a rubber roller 32 which is mounted upon a shaft .33, this shaft being carried in adjustable bearings 34 upon the plate and carrying three difierent diametered pulleys 35 over which a band 36 passes, this band in turn passing over any one of three pulleys 37 mounted upon the shaft 14. Opposite the roller 32 there is provided a spring pressed steel roller'38 which bears against the strip and the strip passes between this steel roller 38 and the rubber roller 32.

For the purpose of regulating the amount of strip which is fed downward between the rollers, I providea gauge rod 39 which is screwed into the lower end of the table 10 and which extends down below the same, and mounted upon this gauge rod is a collar 40 having a set screw 41 whereby the collar is held in place, this collar carrying the up wardly extending finger 42, which at its upper extremity extends forwardly so as to form a stop 43 against which the lower end of the strip will abut. The lower knife 17 is cut away at its forward end, as at 23, as before explained, so that this upwardly extended stop may be moved int-o position very close to the lower face of the cutting edge of the knife 17 and this recess 23 will permit the reciprocating movement of the knife 18 and at the same time permit this stop to be located a very short distance below the under face of the knife to thus M1313 to out very short rules, br asses or the li re.

Where this device is automatically operated, the gauge is to be adjusted, it may be assumed, close up to the line of travel of the under face of the knife 18. As the knife reciprocates, the roller 32 will be rotated a predetermined distance to shift the strip downward a certain predetermined amount. If the stop is adjusted very close to the under face of the knife 18, it is ob- 'vious that the strip cannot be fed any further down thanthe stop, and though the feeding roll'er"32 will move on the strip prising a will stop and thus a very short brass rule, slug or spacer will be cut off of the strip. If, however, the gauge is disposed a considerable distance downward on the rod 30, then the feed will always be a predetermined amount for each reciprocation of the knife, and if the rubber roller 32 feeds the strip down one inch, it will be obvious that the reciprocations of the knife will out these rules onein'ch in depth and cut as many of them as necessary.

Where slugs-or leads are to be cut, the reel with its thin brass strip, guides, etc., may be'inoved entirely away and the strip of type metal, lead or the like slipped downward through the recess 25 until the end of the strip strikes the stop 34 and then the knifemay be operated by handto cut off the strip of lead. It will be seen'that the roller 32, by reason of thefact that the shaft thereof is mounted in adjustable bearings 34, maybe moved entirely out of the way to permit the insertion of strips for the purpose of cutting slugs or leads, of course, removing a band from its engagement with the pulleys 35 and 37. The plurality of different diametered pulleys 35 and 37 permit the feeding roller to have any desired ratio of drive to the ratio of the shaft 14. Thus by having three differently diametered rollers, means for causing three lengths ofbrass or copper strips may be cut. The thin spaces of brass or copper are only cut'72 points or one inch and lead slugs or rules above or longer than that would be cut by using the relatively larger pulleys on the shaft 33 than were used on the shaft 14, and also, of course, as before remarked, by thrusting the stri of metal down through the cutter to the stop 43 and then cutting the strip off.

While I have illustrated a construction which I have found to be particularly effective, I do not wish to be limited thereto as it is obvious that many changes might be made in the details of this construction and arrangement of parts without departing from the spirit of my invention as defined in the appended claims.

I claim 1. A slug or spacer eluding a fixed knife having a recess upon one face, a reciprocating knife coacting therewith fixed knife and moving beneath the fixed knife, means for reciprocating-the movable knife, and an adjustable stop disposed below the path of movement of the movable knife and limiting the inseition of the material through the space between the 'two knifes and movable into position within the recess.

2. A slug or spacer cutting machine comsupporting-frame, a fixed knife mounted upon the frame, a reciprocating knife coacting with the fixed knife and cutting machine inand operating just belowthe i the reciprocating knife,

moving just below the same, guides for the reciprocating knife, means for reciprocating the movable knife, the face of the fixed knife confronting the movable knife being vertically recessed, the under face of the forward end of the reciprocating knife being cut out, and means disposed beneath the path of movement of the movable knife for limiting the insertion of the material to be cut by the movable knife, said means in cluding a stop movable up into position close to the under face of the fixed knife, the cut away portion of the movable knife accommodating said stop.

3. A slug or spacer cutting meachine comprising a supporting frame, a fixed knife mounted upon the frame, a reciprocating ,knife coacting with the fixed knife and same, guides for means for reciprocating the movable knife, the face of the fixed knife confronting the movable knife being vertically recessed, and means for automatically moving a strip of material downward through said recess of the fixed knife past the path of movement of the movable knife a predetermined amount for each reciprocation of the movable knife.

4. A slug or spacer cutting machine comprising a supporting frame, a fixed knife mounted upon the frame, a reciprocating knife coacting with the fixed knife and moving just below the same, guides for the reciprocating knife, means for reciprocating the movable knife, the face of the fixed knife confronting the movable knife being vertically recessed, means for automatically moving a strip of material downward through said recess of the fixed knife past the path of movement of the movable knife a predetermined amount for each reciprocation of the movable knife, and a stop disposed below the fixed knife and the path of movement of the movable knife adapted in one position to engage the material and prevent its being shifted to the full extent, said stop being adjustable.

5. A slug or spacer cutting machine comprising a supporting frame, a fixed knife mounted upon the frame, a reciprocating knife coacting with the fixed knife and moving just below the same, guides for the reciprocating knife, means for reciprocating the movable knife, the face of the fixed knife confronting the movable knife being vertically recessed, and means for automatically moving a strip of material downward through said recess of the fixed knife past the path of movement of the movable knife a predetermined amount for each reciprocation of the movable knife in moving just below the vertically recessed, means for eluding a pair of rollers on each side of the path of movement of the strip, and means for driving one of said rollers in a feeding direction simultaneously with the reciprocations of the movable knife.

6. A slug or spacer cutting machine comprising a supporting frame, a fixed knife mounted upon the frame, a reciprocating knife coacting with the fixed knife and moving just below the same, guides for the reciprocating knife, means for reciprocating the movable knife, the face of the fixed knife confronting the movable knife being vertically recessed, means for automatically moving a strip of material downward through said recess of the fixed knife past the path of movement of the movable knife a predetermined amount for each reciprocation of the movable knife including a pair of rollers on each side of the path of movement of the strip, means for driving one of said rollers in a feeding direction simultaneously with the reciprocations of the movable knife, a reel for supporting a strip of thin material operatively above said rollers, and guides guiding material downward from said reel between said rollers.

7 A slug or spacercutting machine comprising a supporting frame, a fixed knife mounted upon the frame, a reciprocating knife coacting with the fixed knife and moving just below the same, guides for the reciprocating knife, means for reciprocating the movable knife, the face of the fixed knife confronting the movable knife being automatically moving a strip of material downward through said recess of the fixed knife past the path of movement of the movable knife a predetermined amount for each reciprocation of the movable knife including a pair of rollers on each side of the path of movement of the strip, means for driving one of said rollers in a feeding direction simultaneously with the reciprocations of the movable knife, a reel for supporting a strip of thin material operatively above said rollers, guides guiding material downward from said reel between said rollers, and a stop located below the path of movement of the reciprocating knife and dis posed in the path of movement of the strip fed between said rollers, said stop being adjustable toward or from the fixed knife to thereby limit the projection of the strip downward between said knives.

In testimony whereof I hereunto affix my signature.

FRANK VIRGIL DUNHAM.

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