US5150A - Sash machisteky - Google Patents

Description

.,'UNTTED sTATEs PATENT OFFICE.

JESSE LEAVENS, OF SPRIGFIELD, MASSACHUSETTS.

' full, clear, and eXact descriptionof the ,principle or character which distinguishes' them vfrom all other things before known and of the manner ofwmaking, constructing,2 `and using the same, reference being had to@ the accompanying drawings, making -part:`

l cal shaft (fw) see Fig. 2, on the lower end of SASH MACHINERY.

Specification of Letters Patent No. 5,150, dated June 12, 1847.

VTo all whom t may concern:

chinery, &c., and that the following is a ofthis specification, in whichy Figure 1 is a perspective view ofthe ma-j Ichine; Fig. 2, a longitudinal elevation; Fig. 3, the forked chisel; and Fig. 4, details show- 'ingthe molding iron or bits.

The same letters indicate parts in all thel low the top of the frame (A) as clearly figures.

The machines heretofore made for manufacturing sash are inconvenient and expen. sive, and require the shaft to be frequently; moved by hand for each operation. By my improvements many of t-he operations are! combined and much greater accuracyv and ,expedition insured.

The frame for containing the machinery -is represented in Fig. 1 in perspective and is designated by the letters (A, A, B, C, D,

&c.) and is of suitable size and strength to support the machinery contained therein; and its outline is nearly a curve. On the l,top of one side of this frame there is a plank (L) through which a circular saw (N) projects having beside it an adjustable gage (O), this saw and gage are for the purpose of slitting out the stuffthese parts are not new. The stu is then taken to the opposite side to be planed, the apparatus for this purpose is shown in the drawingFig. 1 on the front side and vconsists of the following parts: an adjustable bed piece (12), is attached to the side of the frame and regulated in its position by set' screws (13) it is there permanently secured by additional screws (9); above the-bed there is a square planing head (25) affixed to the end of a shaft ('28) that projects over the -side of the frame; on this head proper planes (26) are fastened for the purpose intended. In front of the plane-there is a feed roller (38) on a-long shaft (39), the outer end of which can be supported by a spring or otherwise so as to rise or fall on the stuff to be planed; this roller is driven by a pulley (40) on the opposite end ofv the shaft. After the stuff is planed by this apparatus it isl conveyed to another side of the machine where the carriage (17) is situated; this carriage is an oblong frame on which the workcan be pla'ced and gaged to the proper length with its end projecting over the end ofthe carriage next the frame (W W)'in front of which said carria-ge `slides on ways. y i

In the frame (W, W, W) (which projects above the frame on which the carriage y slides) are the bearings (c, 0) of a vertiwhich a revolving cutter head (u) is fixed. This cutter is/ raised or lowered to suit the work tov be done by means of the Vbearings (o, 11) being made adjustable on the frame (W), which frame .(W) extends down beshown at (Wm), Fig. 2, and has attached to it the bearings of a similarshaft (44) and which is necessary to prevent their cutting too much across thegrain, as would obviously be the case were they made large;

and they are placed with their shafts perpendicular to t-he face .of the stuff to be tenoned, consequently it is necessary to have them on two separate shafts in order to cut a suicient length of tenon and allow them lto cut'in great measure with the grain of f thel wood instead of across it the space being left clear between the cutter heads to let the tenon pass through; they are required to be placed at right angles tothe stuff as above stated in order to cut under at the shoulder to form the coping, &c.,v

which Vhas not beforebeen effected at one operation, thus perfecting the tenons by a single passage through the machine by the employment of cutterheads yof this description the work is finished much more per fectly thanl in any other way, and with less power. f l

A circular saw (M) is placed just before the cutters in a line with the motion of thecarriage (17) above named on which the stu to be worked is placed by gage. r.ll`he work placed on the carriage is thenmoved along with the carriage in front of the saw and out to proper length, and is then made to pass the cutters to form the tenon with a perfect coping and franking according to the shape of the tools used on the cutter heads, by this combination of parts the stu only requires to be. once gaged and a great saving of laboris thus effected. rIhis having never before been done forms a part of my improvement for facilitating the operation of sash making.

After leaving the carriage the stuff (which is wide enough for several bars, mountings or rails as the case may be) is taken to the saw (N) where it is slit up into strips of a proper width.

The next operation performed is mortising the stuff which is done in the mortising frame in Fig. 1. This machine has an adjustable bed (VIII) on which thepiece to be mortised is laid, over which there is a grate (V) that plays up and down in fender posts (IV) on ways (hf), the stock of the chisel is attached to this gate so as to revolve to turn the chisel and moves with it in'these respects it is like the common mortising machine.

A rod (we) shown in Fig. l, connects this gate with an eccentric (u) on the ,sha-ft- (w3) which has 'its bearings in the double treadle lever (n) which has its fulcrum at (n3) near the back of the frame'a little below the driving fdrum (4) which is connected with a pulley (2) on the shaft (H3) by a band (3). The t-wo arms of the lever (n.) that project beyond the 'frame turn down at right angles as at (p) and are joined at the bottom by. a treadle (r) on which the foot can be placed to work themachine-by this arrangement it will be seen that when the treadle is brought down by the foot to mortise deeper, the band that drives the pulley is made tighter as the resistance increases and will always work the chisel when turned, to the depth gaged by the treadle, in the manner described; an arrangement never before employed, and in the making of sash almost indispensable to the rapid working of the stud. It is also readily worked by manual power or by that applied to the drum (4), which is found necessary in this manufacture, while its simplicity renders it always eficient. l

After being mortised the stuff is transferred to the front of the machine (see Fig. 1) and passed under the cutter head (25) above described, whichhas a set of suitable cutter irons (to be hereafter described) attached to it togcut the proper molding on the piece under operation, which completes the process. i

The molding or cutting irons are `of a proper form for the style of the sash to be made and are composed of two or more parts combined into one cutter, this is illustrated in Fig. 4. It is obvious that a flat edged chisel or cutter like that represented at (B) Fig. 4v couldnot be ground and sharpened without great labor if made in one piece. I therefore construct my cutters in two or more pieces to suit the nature of the case, the sha-nhs of which overlap each other, the edges being in the same plane (see edge view A &c., Fig. 4) so that the parts can be readily ground, sharpened, and readjusted, and the proper set given tothe different parts as the @Work requires; other modifications of these tools are shown at (13, B" B4) same ligure, with theirparts detached above and an edge `View i below. Irons of this construction are adapted to the cutter head (25) and also to the cutter heads (u) and (Q).

Having thus fully described my improvements in sash machinery, what I claim as new and desire to secure by Letters Patent,

ls- A 1. The employment of small cutter heads placed on separate shafts at right angles to the stuff to be tenoned, which enables them to cut with the grain and also to cut under at the shoulder, and be readily adjustable the sp-ace between the cutters being left free for the tenon to pass through, as set forth, so that by passing the stuff once through, it is tenoned, coped, and franked atone operation, as above described.

2. I claim the combination of the treadle 4with the rotary power of a mortising machine to gage the depth to which the chisels cut and to tighten the band gradually as the chisels cut deeper so that the chisels can be gaged and driven at any elevation within the compass ofthe machine by the band connected with the eccentricshaft as herein set forth and at the same time can be easily worked by manual power if required.

3. I claim constructing the cutter irons in the manner Set forth in two or more parts having all the cutting edges in the same plane, so that they can be readily separated and sharpened when made inthe most compleX ligure, and then recombined ina permanent manner, as set forth.

JEssE nEAvENs. i

Witnesses AMos BQ LITTLE,

J. J. GREENOUGH.

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