US901454A - Dovetailing-machine. - Google Patents

Description

' A. LASANCE.

DOVETAILING MACHINE.

APPLICATION FILED BEP'LIB, 1905.

901,454, I v Patentedi0ct.20,1908.

3 SHEETS-SHEET 1 ullnlmm A. LASANGE. DOVETAILING MACHINE. APPLICATION FILED $1321.18, 1905.

901,454. Patent ed 001;. 20, 1908;

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A. .LASANGE. DOVETAILING IACHINE.

APPLICATION FILED SEPT. 18, 1905 901,454. Patented 0t.20,1 9os.

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UNITED STATES PATENT curios.

AUGUST LASANOE, OF CINCINNATI, OHIO.

DOVE TAILING-MACHINE To all whom it may concern:

Be it known that I, Auous'r LASANCE, a citizen of the United States, and, a resident of Cincinnati, in the county of Hamilton and State of Ohio, have invented a certain new and useful Improvement in Dovetailing-Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which form a part of my specification.

My invention relates to a machine whereby the ends of boards may be provided with clove-tails or mortises whose sides may be made to recede, so that when the tenons of the one board are inserted in the mortises of the other, the boards will be locked in place against any pull in a direction substantially parallel with the board; and the machine is intended for use more especially in the making of boxes, so that when the different boards forming the sides of a box have been assembled, they will be locked in place, and obviate the necessity of mailing or gluing them.

The purpose of my invention is to provide a machine which will not only be simple in construction, butwill also permit one or more boards to be operated upon at one and the same time; a machine in which both the upward and downward movement or travel of the table is employed for operating on the different ends or boards.

In the drawings :Figure 1, is a front elevation of my improved machine with a portion of the guard broken away to show the cutters and other mechanism. Fig. 2, is a top plan view. Fig. 3, is a vertical sectional view taken on line 33 of Fig. 2. Fig. 4, is a detailed view of the clutch-operating mechanism. Fig. 5, illustrates the style of mortise and tenon produced.

Like letters of reference indicate identical parts in the respective figures.

A represents the frame of the machine which is provided at its front with a composite table B, which is adapted to be moved up and down so as to pass the ends of the boards, which are to be provided with mortises and tenons, across the cutters or saws arranged on the arbors, whose construction will be hereinafter described.

The composite-table B is provided with the laterally extending arm a, see Figs. 1 and 2, which arm is rigidly secured to the table B or its base and may be provided at Specification of Letters Patent.

Application filed. September 18, 1905.

Patented Oct. 20, 1908.

Serial No. 279,028.

its free end with a roller or bolt which is adapted to take into the channel or slotway b, with which the wing C, which is secured to the one side of the frame of the machine, is provided. This wing C, may either be bolted or in any other suitable manner secured to the frame.

The table B is controlled in its vertical movement by the nature of the slot-way b in the wing O; that is, if the slot-way 7) should be made with the angle or incline shown in Fig. 1, it will be readily understood that, with the upper portion of the composite-table loosely mounted on the base or lower portion of the table, the roller or bolt on the end of the arm a taking in the slot-way b will compel the upper portion of the table to move in a similar plane parallel with the slot-way b, it being shown that the upper part of the table is of less width than the base or lower portion, which permits the upper portion to take ,a path corresponding with the slot-way b. The upper part of composite-table B, is slidably mounted on the lower portion and is held in place by the bolts a a which take through the slots 6 b, as shown in Figs. 1 and 3.

0, d, are arbors or shafts, each of which is provided with a series of disk cutters or saws e, e, which are properly separated from each other and firmly held by spacing blocks or collars e, 6; the whole being securely keyed to the respective shafts. The shaft 0 has its bearings in the housing f, f, see Fig. 2, while the shaft cl, has its bearings in the housing f, (see Figs. 1 and 3) which are secured to the frame of the machine in an opening below the shaft 0, as can more clearly be seen in'Fig. 3. The shaft 0, is provided with a pulley c which is adapted to receive a belt from a power shaft, and shaft d, is similarly provided with a pulley cl which also receives a belt from a power shaft. The ends of shafts 0 and d, which are provided with the pulley, are supported on pillow-blocks beneath the housings f, f in the well-known manner, as clearly illustrated in the drawings. By having the one end of each shaft thus supported by pillow-blocks of the desired size, it is apparent that the arbors will be held at an angle or incline as seen.

D, is a pulley for receiving a belt from a power shaft, whereby power is transmitted through the medium of the pinion g, mounted on the same shaft with the pulley D, to gear E. This gear E is mounted on a sleeve /2., which forms part of a clutch mechanism (see Fig. 2). The gear E with its sleeve h is of course loosely mounted on a shaft E on which shaft is keyed or feathered the other section it of the clutch mechanism. The section or clutch it is operated by the bifurcated arm it, see Fig. 3, the bifurcations taking to either side of the clutch h, which is provided with the circumferential groove it, see Fig. 2. Taking through the ends of the bifurcated arm and into the. groove h are the set-screws h. The bifurcated arm It is mounted on a shaft 7" and is normally controlled by the coil-spring j, see Fig. l. Fulcrumed on the arm is the lever 70, whose one end is adapted to take against the lower end of the bifurcated arm it, while the other end of the lever is connected to the rod 70', which leads down to, and is connected with, the foot lever or treadle 7c. The treadle 7a is pivotally secured, preferably by a collar which takes about the lower cross-piece of the frame A, see Fig. 3. It will be seen that upon depressing the foot-lever is, that rod 70 will be drawn down and lever 70 rocked, whereby the bifurcated arm Zr will throw the clutch it into mesh with the sleeve h of the gear E, whereby clutch It will revolve, and with it the shaft E, to which it is feathered, thus giving motion also to arm or link M which is keyed to the end of the shaft E. The arm M is provided preferably with a slot-way into which a bolt takes, whereby the rod Z is secured to it and thus providing for any irregularities or variations that may arise. This rod Z at its lower end is bolted to a rod Z which is keyed to the shaft Z, suitably mounted on the frame of the machine. Keyed to the same shaft Z is red Z. These rods Z Z lead to the forward end of the machine, where they are secured through link connections as at 912/ (see Figs. 1 and 3) with lobes or lower extensions on, of the tablebase. The composite-table B is adapted to ride up and down in guide-ways formed in the frame of the machine. These guideways may be made by bolting plates 1 to the front of the machine.

In order that the clutch may remain intact during the operation of the machine, and be held against the action of the spring j, I provide a lug q, see Fig. 2, which normally takes into the notch q (as shown in Fig. 8) with which the clutch-member h is provided; the clutch-member it having a similar notch diametrically opposite the one shown in Fig. 2. It will be seen that in shifting the member It into operative position, that the lug g, which is integral with the frame or supporting bar of the machine, will be made to ride out of the notch and bear against the outer extended edge of the clutch-member h, holding it over in mesh, until the clutch has made a half revolution, when the next notch will be opposite the lug Q and permit the clutch to be thrown out by the action of the spring j. The notches are so arranged as to be opposite to the lug g whenever the shaft E has been revolved sufliciently to move the composite table B either to its lowest 0r highest point through the action of the levers Z, Z and Z.

The table B is provided with the bifurcated or forked arm F which is secured in place by, and bolted onto, the rod G, see Fig. 1, which has its bearings in earsr, 1", on the front of the base of the table and is free to move slightly as will be seen. The bifurcations of the arm F are provided with rods F which extend up through the table proper and take through a clamping plate F which extends across the table B, as can be seen in Figs. 1 and 2.

The bifurcated arm F is normally drawn down, and with it the clamping plate F, by the action of the spring a, which bears against the lower ear or lug r secured to the table base and against the collar n, which is bolted on to the rod G. It will thusbe seen that plate F is practically held down on the table B and of course will be held down onto the board or boards that are placed on the table. In order to prevent the clamping plate F from being drawn down too tightly on to the guides arranged on the table-top it is preferable to provide the cushioning springs t, which take about the rods F.

Pivotally secured to the lower end of the rod G at the point m is a cross-bar G whose ends are adapted to engage with the stopblocks or plates H and H, see Fig. 1. This cross-bar G is also bolted to the extension I which is preferably an integral part of the table base; this provides a fulcrum for the lever or bar G. It will be seen that when the table has descended to a point where it will have passed the cutters, that the lever or cross-bar G will have its one end strike or butt against the stop-block H, and by reason of the connection of the bar G with the extension Lthe rod G will be pressed upward against the action of the spring 97., thus relieving the pressure of the clampingpla-te F, on the boards operated upon, permitting them to be withdrawn from beneath the clamping-plate F. In order that the same result may be had when the table B has reached its highest point on the upward movement past the cutters, the stop-block or plate H is provided, which will engage the other end of the bar or lever Gr, depressing that end and tipping the other upward, thus forcing the rod G up against the action of the spring n and give the desired result. As the end of a board is mortised by the one passage of the table B past the cutters, an-

other end or board is inserted, thereby employing the return or reverse movement of the table.

I provide the table with a guide-plate L, which has bolt and slot connection with the top of the table B. In order that the board or boards to be operated upon will not be inserted too far toward the cutters, I also provide the stop or gage 0 (see Fig. 3), against which the extended edge or ends of the boards may take. In order to prevent the boards from having any lateral move ment, I also prefer to provide the guide K which has a slot and bolt connection with the table B, so that it may be adjusted to boards of different widths. This guide K has secured to it, at right angles thereto, and extending in toward the cutters, the arm K, whose free end may be bifurcated as shown in Fig. 3, the arm being preferably of thin metal so as to have a slight springing tendency, permitting the one bifurcation to give slightly independent of the other. These bifurcations or fingers bear against the edges of the boards and hold them against the guide-plate L. My reason for constructing the arm K with the bifurcated ends isthat more than one board may be inserted at the same time, and as there may be a slight variation in the widths of the boards, the bifurcations of the arm K will bear against each board and permit of this slight variation in the boards without releasing pressure on the other board.

J is a yoke or bracket which is bolted to the base of the composite-table B, and this yoke or bracket, may also have secured to it the plate or shield J, which will prevent the particles of wood from being thrown into the face of the operator. I provide the yoke or bracket J for the purpose of having a suspended weight attached thereto, which is intended to practically equalize or counterbalance the weight of the table and its parts, thus diminishing the power necessary to operate this part of the machine.

I have shown and described what I beli eve to be the preferable construction of my improved machine, but it will be readily understood that a number of minor changes may be made without departing from the spirit of my invention, and I do not wish to be understood as limiting myself to the exact construction shown and described.

Having thus described my invention, what I desire to claim as new, and to cover by Letters Patent, is

1. A dove tailing machine comprising a reciprocating work-supporting table, cutter shafts arranged in substantially a common plane parallel to the plane of reciprocation of the table, said cutter-shafts inclined toward each other in said plane, and means to guide the table so that the path of its travel shall be normal to one shaft during part of its travel, and normal to the other during another part of its travel, so that the work shall be grooved at one angle by the cutters of one shaft, and at another angle by the cutters of the next shaft.

2. In a dove-tailing machine, the combination of a power shaft, a driven shaft, clutch mechanism mounted on said driven shaft and normally out of mesh, gearing intermediate of said power shaft and clutch mechanism whereby power is communicated to said driven shaft, a lug secured to the frame of the machine and normally registering with said clutch when the latter is out of mesh, but adapted to hold the clutch in operative position for a predetermined period, a feed table reciprocally mounted on the frame of the machine, means intermediate of the driven shaft and feed table whereby the latter is given movement when the clutch is in operative position, means connected with the table and engaging with a slot-way in the frame of the machine whereby the table is made to reciprocate at different angles, with cutters mounted on arbors inclining toward each other but in a common plane adjacent the path of reciprocation.

3. A dove-tailing machine comprising a power shaft, a driven shaft, means intermediate of the power shaft and driven shaft whereby power is communicated to the latter at predetermined intervals, a table mounted in the frame of the machine, mechanism intermediate of said driven shaft and the table whereby the latter is reoiprocated, an arm connected with the table and the frame of the machine. whereby the table is made to reciprocate at different angles, a lug secured to the frame of the machine and normally registering with the means interme diate of the power shaft and driven shaft but adapted to hold said means in operative position for a predetermined interval, and cutters mounted on arbors arranged at an incline to each other and in a common plane in proximity to the path of reciprocation of the table, in combination with clamping mechanism normally held in proximity to the -table-top, and a lever connected with said clamping mechanism and adapted to reciprocate with the table whereby the relation of the clamping mechanism to the tabletop may be altered at predetermined periods.

AUGUST LASANOE.

Witnesses:

LOUIS Gorr, GEORGE E. HEIDMAN.

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