US567129A - Rake and apparatus for making same - Google Patents

Description

' N o M o d e 1 L G I B B S.

RAKE AND APPARATUS FOR MAKING SAME.

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PATENT LEl/VIS GIBBS, OF CANTON, OHIO.

RAKE AND APPARATUS FOR MAKING SAME.

SPECIFICATION forming part of Letters Patent No. 567,129, dated September 8, 1896.

Application filed January 6, 1896- To aZZ whom it may concern.-

Be it known that I, LEWIS GIBBS, a citizen of the United States, and a resident of Canvented a new and useful Improvement in Rakes and Apparatus for Making the Same, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification.

My invention relates to rakes, more particular] y lawn-rakes, and means for making the same, the object being to provide a rake-head which possesses the requisite strength and durability and to permanently secure the teeth thereto in a simple manner without the requirement of foreign means, such as pins, screws, and the like. I am aware that it is not broadly new to dispense with foreign means for establishing the connection of the teeth with the head of the rake, for in my Patent No. 514,989, dated February 20, 1894, I obtained this result, but in a different Way. In the said patent the headis made of spring metal and is bent in a U form, so as to bring the tooth-holes into alinement. The teeth are then inserted through the alined holes, and the tendency of the rake-head to spread firmly pinches the teeth. The spring action of the head is all that tends to hold the teeth in place. In my present invention I provide positive means for holding the teeth, as will appear farther on.

With these objects in view my invention relates to certain features of construction and combination of parts, as will be hereinafter described and claimed.

Figure l of the accompanying drawings is a view in perspective illustrating my invention. Fig. 2 is a plan View of a fragment of a strip of sheet metal, showing the form and manner of punching the holes for the rake-teeth before the strip is formed into a tubular head. Fig. 3 is an end view of the dies by which the strip of sheet metal, as shown in Fig. 2, is bent or turned to U form, as shown in Fig. 4. Fig. 4 is an end view of dies by which the cylindrical tube is formed and the teeth formed.

Heretofore tubular rake-heads have been made by cutting drawn or welded tubes to desired lengths and drilling therein a series of holes transverse the tube and diametrically Serial No. 574,419. (No model.)

opposite, in which were placed a-series of rake-teeth. This method has proven to be too expensive, and the result not desirable, because of the excessive weight and cost of production. To obviate the excess of weight and cost is the object of my invention, which I will now describe as a newmethod of manufacturing tubular rake-heads.

A denotes a strip of sheet metal cut from a rolled sheet of such width as would provide the desired length of head and of desirable number in thickness, say from sixteen to twenty American wire-gage. These strips are nipped or cut off the end of the machine by a cutterthe full width of the sheet, with a uniform width throughout their length, the edges being parallel. In this strip A there is then punched in pairs series of holes B, as shown in Fig. 2. The holes may be punched in pairs, two at a time, or one entire side at one operation, but always in such order as to bring the holes diametrically opposite when the strip is formed into a tube. When so punched, the strip is placed between the dies 0 and D, the former having provided on its lower face a rib a and the latter in its upper face a corresponding groove 1). (Shown in Fig. 3.) The dies are then closed, by which movement the sheet 'is turned to a U shape, as shown in the dies, Fig. 4.

When the strip A, with holes, as B, punched therein, has been turn ed to U form with sides parallel, or thereabout, the prongs E of the previonsly-provided teeth F may be passed through holes B, as shown in Fig. 4, and free edges of the U-bar turned downwardly and inwardly to contract the inner edge of the holes B on the prongs E of the teeth F, thereby securing the teeth in the head F.

The dies shown in Fig. 4 are made in two parts, G and H, the latter having in its upper side a groove or recess, as 0, adapted to receive the U-shaped head as formed in the die D. (Shown in Fig. 3.) The upper sides of the die maybe rounded off, as shown at d, to curve the teeth transverse thehead.

In the upper part G of the die is provided a groove 6, the sides of which are adapted to catch over the sides f of the sheet-metal head and turn them in and down to position indicated by the dotted'lines h, thus completing the tube K. The sides of part G of the die Too are curved down, as shown, to correspond with the upper side portion of; part II, the operation. of which is to curve or bend the teeth, as before stated. The die may be formed to give any desired curvature to the teeth, or the under face of part G, outside of the groove (2, may be fiat, and the corresponding top part of part II to correspond, which would leave the teeth straight, but secured in the tubular head because of the pressure of the dies on the tube, which condenses the sheet metal forming the tube about the teeth, thereby securing the teeth in the tube or rake-head.

Although I have shown and describeda tubular rake, and prefer such form, yet I would have it distinctly understood that I do not restrict myself to such form, as I contemplate.

as fallin-gwit-hinthe, scopeof my invention anyform of rake-head havingtooth-openings the teeth.

the die II, whereby as the tube is formed in thecentral recesses or grooves, the end portions oftlle teeth will be bent transverse the head or bar, substantially as set forth.

2. In a rake, a rake-head formed with a series of tooth-holes, rake-teeth inserted through said holes, the walls of said holes being contracted to permanently bite or pinch The combination with a hollow rakeheadhaving two sets of registering tooth- ,holes, teeth inserted through saidholes, said rake-head being bent on a line cutting the holes whereby portions of the walls of said holes are contracted to bite and firmly and permanently hold the teeth.

t; In a rake a rake-head consisting of a longitudinally-hollow body having two sets of registering tooth-holes, rake-teeth inserted through said holes, said head being bent on a line cutting the tooth-holesto contract portions of the walls of said holes to permanently bite the teeth, substantially as set forth.

In testimony whereof I have hereunto set my hand this th day of December, A. D. 1895. at

IJEIVIS GIBBS. \Vitnesses:

W. K. MILLER, BURT A. MILLER.

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