US107555A - Improvement in machines for dovetailing- window-sash - Google Patents

Description

N. PETERS, PHOTO-L THOGRAP gaat entre.'

nn WITT' o. SMITH, or IyION'IeOIIInRr, ILLINOIS.-

Letters Patent No. 10 7,555, dated September 20, 1870.

IMPRGVEMENT IN MACHINES FOR. DOVETAILING- WINDOW-SASH.

The Schedule referred to in these Letters APatent and making part of the same.

To all lwhom it may concern Y Be it known that I,'DE WITT C. SMITH, of Montgomery, in the county of Kane and State of Illinois, haveinvented a new and useful Improvement in VMachines for Dovetailing Window- Sashes; Aand I do hereby declare that the following is a full, clear, and exact description thereof', which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawing formngpari of this specilication, in which- Figure l represents a side elevation of my improved machine;

Figure 2 'represents a plan view, with a part broken away;

Figures 3, 4, 6, and' 7 represent detachabletables, provided with guides, adapted to present the diiierent pieces properly to the saws;

Figure 5 represents the manner of' presenting the y meeting-rail of `the bottom sash to the saw B; and

Figure 8 lrepresents the ends of check-meeting rails after they have passed through the tenoning-Inachine. Similar lettersfof reference indicate like parts.

The'object of this invention is to provide a simple machine for forming the dovetail tenons, and slots `for joining-the frames of window-sash.

Y 1t consists in the arrangement ot' the adjustable table, detachable bed, adjustable spring stops, and the guides, with reference to the `saws mounted upon a horizontal arbor, as will be hereinafter more fully described. `.A represents a saw-mandrel arranged on a suitable bench, and provided with three s a'ws, B, C, and D, which are designed to be of about the thickness of the narrowest part of the slots in the stiles..

E represents a table arranged on the frame in front of the saws,and provided 'with guides adjnstably connected thereto, for governing the position of the difierent parts as they are presented to the saw.

F represents a guide, against which. the stile is guided to cut the straight side of the slot, as shown in red in iig. 2. It is shoved'in, against the saw until the adjustable stop Gr, on the guide F, drops into the mortise for the cross-bar of the sash, as shown at y, which has been previously made. 'lhe stile is then withdrawn, and the other end presented, with the other side up, in the saine manner, until a' spring s'top, H, laying ou the face of the table, drops into-v the said niortise. The stile is then presented, in the same manner, to the saw C by the inclined guides I or K, for sawing the Ydovetailed side of the slot. As

the saws are as thick asthe nairowest part of the' slot, and as the widest part is not more than twice as wide as the said narrow part.I the saws will remove all the stock necessary to complete the said slots.

M represents spring guidesfor pressing the material against the side of the guides.

N represents a guard hinged to the frame to protect the operator from the saws.

For sawing the bottom and top rails, and the mecting rails, detachablet-ables may be provided, with guides, especially designed and adapted to the. several parts which may befcqnnectedto the table in place of that part, 0, of it to which the guides I and K lare connected, which is made detachable-for the purpose. Y

, For this purpose the above 'railsl are first passed through a tenoning-machine in the usual manner for making a tenon, except the check-meeting rails, which are only cut on one side far enough to form a shoulder,

with a cope, to tit the bead Or molding on the stiles,

as seen in iig. 8, which shows the meeting rail fonthe bottom sash.

This rail is then presented to the saw B, as represented. in iig. 5, where F represents Vthe guide, as-

shown in iig. 1, and sawed in a distance equal to the recess on the other side, shown by the dotted lines x. It is then transferred to one of the before-mentioned detachable portions ot' the table, as shown in iig. 4,

chine, and the recess cut is thereby inclined on that side which constitutes the face of the tenon, as shown, atzvz, ing. 3.

The end ofthe rail isthen'presented to the saw D and the vertical side of the tenon formed, a detachable table, S, providedwith a vertical guide, T, being used; but, the s'lot thus formed by the saw not being 'of sufficient width, the rail is again moved to the saw .When the slot is widened to the line marked 2:, inv

iig, 3, both ends of this rail may be finished by the saws D and B by turning them bottom-side up as, they are reversed endwise. After this they are passed through the molding-machine and finished.

For forming the -ends of the bottom and top rails, and the plain meeting rails, the detachable tables U and V, provided with the inclined gu'ides W and Y, are used, by which all the material may be cut away to form the tenou by removing them from the saw D vto the saw C.

Having thus described my invention,

I claim as new and desire to secure by Letters Patent- The arrangement of' the adjustable table E, ydetachable bed O, guides F I K, adjustable spring stops H G, and. spring guides M, and the saws B G D,

mounted upon the horizontal arbor A, all constructed and Operating as described, for the purpose specified.

' D. W. G. SMITH. Witnesses:

V. A. WATKLNs MfM. WATKINS.

an inclined

Images