US415394A

US415394A - Tenon ing-machine

Info

Publication number: US415394A
Authority: US
Publication date: 1889-11-19
Anticipated expiration: 1906-11-19

Description

(No Model.)

L. P. PARKS.

TENONING MACHINE.

No. 415,394. Patented Nov. 19, 1889.

' IIIIIIIII IIIIII 4x a E 4;

iffasf N PETERS. Phuwumu m mr, Washington, D c.

UNITED STATES PATENT OFFICE.

LEW'IS F. PARKS, OF CINCINNATI, OHIO.

TE NONlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 415,394, dated November 19, 1889.

Application filed March 16, 1888. Serial No. 267,306. (No model.)

To all whom it may concern:

Be it known that I, LEWIS F. PARKS, a citizen of the United States, residing at Cincinnati, Hamilton county, State of Ohio, have invented certain new and useful Improvements in lenoning-Machines, of which the following is a specification.

This invention relates to improvements in such a tenoning-niachine as is shown in my United States patent of December 6, 1887, No. 374,425; and they consist in the construction, novel arrangement, and combination of certain parts, which will be hereinafter fully described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a side View of my machine. Fig. 2 is a corresponding partial sectional side view. Fig. 3 is a fragmentary front view, partly in section, on line 3 3 of Fig. 1. Fig. 4 is a section on line 4 4 of Figs. 1 and 2. Fig. 5 is asection on line 5 5 of same figure. Fig. 6 is an under side view of washer 3 3. Fig. 7 is a front View of the top part of the tool without the bits. Fig. 8 is an end View of my gaging-frame. Fig. 9 is an enlarged fractional view of the top portion of the tool-holder.

15 15 are the legs, of which I have three, and to which the frame 16 is secured by bolts. The lower horizontal portion 17 forms the rest for the sliding bed-plate 18.

19 is a frame adjustably secured to frame 16, and having two bearings 20 21, which hold and guide the reciprocating stock 22.

23 is the treadle, and 24 a rod connecting it with slide 25, a part of which embraces the stock, while the other portion slides up and down in a slot in adjustable frame 19 correspondingly with the movements of the treadle.

26 is a spring con fined between bearing 21 011 frame 19 and a collar and nut on the upper extremity of stock 22, for the purpose of lifting the latter up again every time after being depressed by the action of the operator on the treadle.

18 is the sliding bed-plate, having guards 27 for the wood to rest against and a nut 28 on its lower side, in which the screw-threaded shank 29 of hand-wheel 30 engages. This shank has two collars 31 31, which keep it from moving lengthwise without interfering with its turning motion.

The iron portion of bed-plate 18 is dovetailed at 32 32 and slides on the correspondingly-shaped rest 17 of frame 16. On one side of the bed-plate the dovetailed portion is not integral with it, but formed by a triangularshaped washer 33, held in place by a bolt 34. By tightening this bolt any wear or slack in the dovetailed portion of the construction may be taken up. To prevent any binding or uneven bearing of the washer, it is only supported on three points 60 6O 60.

The adj ustability of frame 19 enables the operator to bring the tool always close down to the wood, which generally varies in thickness, thereby accommodating the length of the stroke always to the particular thickness of the work. To allow this adjustment to be more gradual and prevent the rather heavy frame 19, carrying the reciprocating parts, from dropping down suddenly when nut 38 on shank 39 is loosened, the rear part of frame 16 has two inclined flanges 35 35 to both sides of its central slot 36, against which washer 37 is held by a nut 38 011 shank 39 of sliding frame 19.

The machine as described so far corresponds in general with the one illustrated in my patent referred to above. The principal improvements in this machine relate to the tool reversing and adjusting device, the cutting-tool holder, the treadle, the gaging-frame, and to devices to take up any wear and slack in the central slot of frame 19, and also in the movable bed-plate 18. This latter device has already been described. The reversing device is principally needed when it is desirable to feed from either right or left, and consists in the handle 40, connected to the stock 22, a collar 41, held in position on the stock by a set-screw, two stops 42 42 on said collar, and astop 43 on slide 25, against which either one of the stops 42 may abut. The distance between stops 42 42 is so regulated that by turning the stock by means of its handle as far as the distance between the stops permits the tool' is completely reversed when the free stop abuts against stop 43. One of the stops 42 is preferablyadjustable. About one-half of collar 41 is cut down from the top, which cut-out forms two more abutments at its ends, against either one of which an extension 61 on the round portion of slide. is pressed by spring 26, serving as a lock 7 to keep either one or the other of stops 42 .close to stop 43.

By loosening the set-screw in collar 41 stock 22 may be turned inde pendently for the purpose of adjusting the tool-holder and tools.

The cutting-tool holder 47 is improved as follows: The wings 48 48 are made longer and the shoulders 49 49 are put l0WQ1d0W11,Wl1lOl1 arrangement allows a shorter cutting-tool to be used, whereby the more expensive steelis saved. The tool-holder is screwed against a shoulder on the stock. In order to shorten the stroke as much as possible, I use a series of sets of cutting-tools on the lengthened wings, by which arrangement, each set cutting in the same time, a piece of wood maybe out about as many times as thick as the stroke of the stock multiplied by the number of series of sets of cutting-tools. On account of the longer wings two scales have to be used for each set of cutting-tools. The latter are preferably securedto theholder byanut and bolt.

50 are grooves in the tool-holder, into which tongues 51 on the cutting-tools fit for the purpose of keeping the latter straight.

52 are set-screws by which the cutting-edge of the tools may be brought more or less forward as it wears off.

63 (see Fig. 9) are springs bolted into a recess on the tool-holderback of the tools. They are bent forward toward the back of the tool, so that the shavings pass between them and v the tool, and are on the upstroke of the latuntil they out against the clamps.

ter torn off the wood and taken away.

To keep the tool from vibrating, I continue the wings 48 48 and connect them at the bottom, from whence another extension 74, passing through a slot in table 18, reaches down into a guide 53, connected to the frame.

The treadle 23 has two lugs 67 on its under side bearing against a hand-wheel 68 on rod 24, by which the height of the treadle maybe changed. The length of its leverage is also adjustable by means of a pin 69 and holes in its rear end.

The wood 64, on which a tenon 70 has to be cut, is clamped into a gage 54, having a stop 55 and the upright clamps 56, between which elements the length of the tenon is determined, the wood being fed toward the tools This gage is particularly useful when a great deal of work of the same length has to be cut. The locking of the clamp is accomplished by the swinging cam 57 being pressed against the inclined portion of the loose clamp and being held in such position by a set-screw in sleeve 58 impinging on rod 59. The opening of the clamp is assisted by two springs 71. (See Fig. 8.)

In order to make it possible for the three sets of cutting-tools to out at once, itis necessary that the lower knives should set back somewhat behind the next upper set. This more accurately.

brings the tools out of a vertical line, which makes it necessary to raise the Wood on one end to incline it sufficiently to bring it under the three knives in the same time. This is shown most plainly in Fig. 3. The inclination is, however, somewhat exaggerated.

is the support used to raise the wood, and 66 is a set-screw to adjust the inclination That portion of support 65 against which the knives cut may be of suitable soft material and is renewable.

The device to take up any wear in the central slot of frame 19 and on slide25, and also to keep the latter always closely fitting into the former, consists in a slotted wedge 72, held in position on slide 25 by a set-screw 73. (See Figs. 2 and 4.) As the slot or the slide wears, the set-screw is loosened and the wedge advanced into the slot and tightened again.

I claim' I 1. In a tenoning-machine, the tool-reversing device consisting in the combination of stock 22, handle 40, stops 42 42, stop 43, and extension 61, for/the purpose described.

2. In a tenoning-machine, the tool-adj ustin g device consisting in the combination of stock 22, handle 40, and collar 41, being held in position on stock 22 by a set-screw, as described.

3. In a tenoning-machine, the tool reversing and adjusting device consisting in the combination of stock 22, handle 40, a collar 41, being held in position on stock 22 by a setscrew, stops 42 42 on said collar, stop 43, and extension 61, hearing against the inclined ends of cut-out portion of collar 41, as and for the purpose explained.

4. In combination with a tenoning-machine, as described, the cutting-tool holder having suitable means to be connected to a machine, and two downward extensions 48 48, being provided with shoulders 49 49 below the point of their junction, recesses 50 to receive the tongues 51 of the cutting-tools, and a scale on each shoulder, .as and for the purpose described.

5. In combination with a tenoning-machine, as described, the cutting-tool holder having suitable means to be connected to a machine, and two downward extensions 48 4S, united below and provided between the points of their junctions with series of shoulders 49 49, recesses 50 50 below such shoulders, scales on such shoulders, an extension 74, and springs 63, as and for the purpose explained.

6. In combination with aftenoning-machine, as described, the adjustable treadle 23, having lugs 67 on its under side, in combination with hand-wheel 68 on rod 24.

7. In combination with a tenoning-machine, as described, the gaging-frame 54, consisting in the combination of stop 55, clamps 56 56, rod 59, sleeve 58, cam 57, and springs 71.

8. In a tenoning-machine, as described, the combination of the gaging-frame 54 with sup: port 65, bed-plate 18, and adj Listing-screw 66, for the purpose specified.

9. In a tenoning-machine, as described, the

combination, with the sliding bed-plate 18, dovetailed at 32, of the correspondinglyshaped support 17 and washer 33, having bearing points 00 60 (50, for the purpose specified.

10. In atenoning-machine, as described,the combination, with the adjustable frame 19 and slide 25, moving in a slot in the former, of the slotted wedge 72 and set-screw 73, as and for the purpose set forth.

11. In a tenoning-machine, the combination, as described, of a stationary frame having a central slot and inclined flanges 35 35 to both sides thereof, an adjustable frame moving on the stationaryframe and in guides thereon, a pin secured to the adjustable frame and passing through the central slot in the stationary frame, a washer extending across the central slot in said frame and resting against the inclined flanges, and a nut engaging the pin after having passed through the washer, as and for the purpose explained.

12. A tenoning-machine consisting of the following combination: a stationary frame 16, having the rest 17, a sliding bed-plate 18, dovetailed below, and having a nut 28 for reception of shank 29, the adjustable frame 19, sliding on stationary frame 16 and held in position thereon by a pin 39, Washer 37, and a nut 38, an adjustable and reversible stock 22, held up by a spring 26, an adjustable treadle, and rod 24, by which the stock is operated, all as described.

13. In combination with a tenoning-machine, as described, the gaging-frame 54, having an adjustable stop sliding in a slot on said frame, and a clamp wherebyit is attached to the wood, said clamp moving forward with the wood toward the cutter and acting as a stop to the feeding operation, thereby gaging the length of the tenon, all as shown and described.

In testimony of which invention I hereunto set my hand.

LEWIS F. PARKS. -Witnesses:

CARL SPENGEL, FRANCIS M. BIDDLE.