US817866A - A corpora - Google Patents

Description

PATENTED APR. 17, 1906.

M. B. MQAPEB, SASH TRIMMING MACHINE.

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APPLICATION FILED JULY25,1904.

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UNITED STATES PATENT OFFICE.

MORGAN E. McAFEE, OF ATLANTA, GEORGIA, ASSIGNOR TO THE HEALD MACHINE COMPANY, OF WORCESTER, MASSACHUSETTS, A CORPORA- TION OF MASSACHUSETTS.

SASH-TRIMIVIING MACHINE.

Specification of Letters Patent.

Patented April 17, 1906.

Application filed July 25, 1904. Serial No. 217,973.

To aZZ whom, it may concern:

Be it known that I, MORGAN E. MGAFEE, a citizen of the United States, residing at Atlanta, in the county of Fulton and State of Georgia, have invented a new and useful Imrovement in Sash-Trimming Machines, of which the following is a specification accompanied by drawings forming a part of the same, in which Figure 1 represents a front view of a sashtrimming machine embodying my improvement. Fig. 2 is a detached and front View, on a larger scale, of the reciprocating cutterhead. Fig. 3 is a detached side view of the reciprocating cutter-head. Fig. 4 is a top view of one end of a sash-bar before it is trimmed. Figs. 5 and 6 are top and edge views of one end of thesash-bar after having been beveled on opposite sides reparatory to the operation of trimming, and Figs. 7 and 8 are respectively top and end views of the sash-bar after the end has been trimmed.

Similar reference-figures refer to similar parts in the different views.

My present invention is an improvement upon that class of sash-trimming machines represented in the United States Patent No. 734,863, issued July 28, 1903, and it has for its object to provide means for trimming the ends of sash-b are at a single 0 eration of the reciprocating cutter-head; an it consists in roviding the reciprocating cutter-head wit adjustable gage-bars adapted to bear against that portion of a sash-bar having the lon est dimension and in providing the cuttercad with a knife adapted to cut that portion of the bar which re uires to be shorter than the extreme length of the bar.

Referring to the accompanying drawings, 1 denotes a su porting table or shelf upon which the mac me is mounted, or in lieu of the shelf 1 the same may be supported upon an upright post. Upon the table or shelf 1 is mounted an upright face-plate 2, provided with a vertical way 3- for a reciprocating cutter-head 4, connected by a pitman 5 with a foot-treadle 6, by which the cutter-head 4 may be depressed by the o erator, said outter-head being normally he d in its elevated position by means of spiral springs 7, connecting the treadle with the fixed portion of the framework. Pivoted at 8 8 upon the face-plate 2 are work-supporting tables 9 9,

capable of being rocked on the pivots 8 and adjustably fastened by any suitable means to the faceplate in order to determine the angle of the work held on the tables 9 to the vertical path of the cutter-head 4. Securely clamped upon the cutter-head 4 are cutters 10 10, having their lower ends sharpened and ground at the roper angle to form cutting edges 11 11, a apted to trim the end of the sash-bar held upon the tables 9 9. The abovedescribed portions of the sash-trimming machine are substantially the same as those de scribed and shown in the United States Patent No. 734,863, above referred to.

In the operation of machines of this class it has been customary to make the cuttingknives 10 of sufiicient width to shave the entire width of the sash-b ar, and great care had to be exercised in trimming the sash-bars .to the exact length required, and this could only be accomplished by continually testing the length of the bar and successively cutting minute shavings from the end of the bar until the proper length of the bar was reached.

In my improved sash-trimming machine I add to the reciprocating cutter-head 4 two gage-bars 12 12, having their faces 13 13 parallel to the vertical path of the cutter-head as it is reciprocated by means of the foottreadle 6 and of sufficient length to form a gage for the end of the sash-bar as it is supported upon the tables 9 during the downward movement of the cutter-head until the sash-bar is engaged by the edge 11 of the cutting-knife, and I form the cutting-knives of sufiicient width to trim that part of the sash-bar only which is shorter than the extreme length of the bar.

In the operation of trimming sash-bars by my improved machine I first bevel the end of the bar, leaving the bar the extreme length desired, the end of the bar then having the appearance as shown in top view in Fig. 5 and in edge view in Fig. 6. trimmed is then placed upon one of the tilting tables 9, which is adjusted to the proper angle to hold the sash-bar, with one of its beveled surfaces bearing against the face 13 of one of the gage-bars 12. The cutter-head is then depressed, bringing one of the cutting-knives 10 into engagement with the sash-bar, thereby cuttin away a portion corresponding to the widt and shape of the The bar to be cutting-knife 10, and as the entire width of the knife is less than the width of the entire width of the sashbar a portion of the sash bar will be left uncut and bearing against the face of the gage-bar, thereby determining the depth of the cut effected by the knife 10. In the sash-bar 14, as shown in Figs. 4 to 8, inclusive, the end is first beveled, as shown in top view in Fig. 5 and in edge view in Fig. 6, forming the two beveled surfaces and 16.. The bar is then held upon one of the tilting tables with the bev- "eled surface 15 bearing against the face 13 of the gage bar. The knife 10 is then depressed, provided with a straight cutting edge 11 and a curved cutting edge 17, adapted to cut away the plane surface 18 and the curved surface 19 of the sash-bar, leaving the surface 15 at each edge of the sash-bar still bearing against the face of the gage-bar. The wood cut away from the surfaces 18 and 19 can be removed at a single downward stroke of the cutting-knife 10, the length of the sash-bar having been determined by the beveled surfaces 15 and 16, and as the surface 15 is held in a fixed. position by the face of the gage-bar the portion cut away by the cuttin edge'll and 17 of the knife 10 will form t e surfaces 18 and 19 at the proper depth from the beveled surfaces 15, as shown in Fig. 7, for the reason that during the downward movement of the cutter-head 4 the path of the cutting edges of the knife 1 0 has a fixed relation to the path of the face 13 of the gage-bar, and the relation of the cutting-knife and gagebar may be accurately determined by the adjustment of the gagebars on the cutter-head, and in order to effect er ses the accurate adjustment of the gage-bars I form a transverse groove 20 across the face of the cutter-head 4, and I provide each of the gage-bars 12 on their under side with a tongue 21, accurately fitting the groove 20 and capable of sliding therein, thereby holding the faces 13 of the gage-bars always parallel with the line of movement of the cutterhead, and I attach the gage-bars 12 to the cutter-head by means of screws 22, passing through slots 23 in the gage-bars and being screwed into the cutter-head 4.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a sash-trimming machine, the combination with a reciprocating head carrying a cutting-knife and a support for a sash-bar, by which one end of said bar is held in the path of the knife, an adjustable stop for the end of said bar carried by said reciprocating head, and a cutting-knife adapted to engage in its out only a portion of the end of said\ bar, leaving the uncut portion still bearing against the stop.

2. In a sash-trimming machine, the combination with a support for a sash-bar, of a reciprocating head carrying a cutting-knife adapted to engage one end of the sash-bar, said head provided with a transverse way at right angles with the line of motion of said knife, a stop for the end of the sash-bar attached to said head and adjustable in said way.

Dated this 1st day of July, 1904.

MORGAN E. MGAFEE.

Witnesses:

PENELOPE COMBERBAGH, R. B. FOWLER.

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