US661647A

US661647A - Saw-setting machine.

Info

Publication number: US661647A
Application number: US73557999A
Authority: US
Inventors: Augustus C Saxton
Original assignee: Individual
Current assignee: Individual
Priority date: 1899-11-02
Filing date: 1899-11-02
Publication date: 1900-11-13
Anticipated expiration: 1917-11-13

Description

No. 66l,647. v Patented Nov l3, I900.

A. C. SAXTUN.

SAW SETTlNG MACHINE.

(Application filed Nov. 2, 1899.)

(No Model.) 3 Sheets-Sheet l. v

1 R 1 I I lxmmeoo eo rm: uonms Plrrcns c0. PHOTO-L17HO.. wnsumm'on, a. c.

No. 66l,647.

Patented Nov. I3, I900. A. C. SAXTON.-

SAW SETTING MACHINE.

' (Application filed Nov. 2, 1899.)

3 Sheets-Shaet "'2.

(No Model.)

a N WW i 6 Patented Nov. l3, I900.

No. 661,647. I

Y A. C. SAXTON.

SAW SETTING MACHINE.

I (Applicatioq flied Nov. 2, 1899.) 010mm.) a Sheets-Sheet a.

. I 1 1 w 5 Q I I 1 l J wilmeooeo 5.2,; M...

NITED' STATES PATENT OFFICE.

AUGUSTUS C. SAXTON, OF NEW YORK, N. Y.

SAW-SETTING MACHINE.

SPECIFICATION formingpart of Letters Patent No. 661,647, dated November 13, 1900.

Application filed November 2, 1899. Serial No. 735,579. (No model.)

To all. whom, it may concern:

Be it known that I, AUGUSTUS O. SAXTON,

a citizen of the United States,and a resident of No. 371 Pearl street, in the borough of Brooklyn, city of New York, county of'Kings, and State of New York, have invented a new and Improved Saw-Settinglvlachine, of which the following is a specification.

The general features of my invention are as follows: The saw-blade, having teeth out on it, is clamped in a device which I call a traveling carriage, the toothed edge of the blade projecting above the carriage. A feeding apparatus, automatically actuated by the machine, feeds the carriage and the saw carried by it to the machine by a'step-by-step movement, two teeth at a time. In its transit the teeth of the saw come opposite certain fixed anvils, opposite to which anvils are automatically-actuated plungers which are struck by spring-actuated hammers, one of them adapted to act upon the teeth to be set to the left,

the other upon the teeth to be set to the right, and the machine is so timed that the feeding of the saw-blade and the setting of the teeth follow in exceedingly-rapid succession,so that it takes a very brief time only to set a saw.

Referring to the drawings thereof, Figure 1 illustrates a plan view of the machine. Fig. 2 illustrates an elevation, partly in section, taken on the line 1 1 of Fig. 1. Fig. 3 is an end view taken at the front of the machine. Fig. 4 illustrates a detail of one of the anvils and its plunger. Fig. 5. illustrates a detail in section of one of the racks which actuate the hammers.

A is the main shaft of the machine, upon which are mounted fast and loose pulleys B B, as usual.

C is the driving-belt.

D D are casings, having hubs E E, which are set upon the shaft A. a

F F are cams connected with rods G, which by wrist-pins H H are connected to verticallysliding racks I 'I. These racks engage with pinions J, loosely set upon shafts K.

L L are arms connected, respectively, to the pinions J, which turn with them loosely upon the shafts K. v

M M are pawls pivoted to the arms L, each actuated by a spring N, and each has near its extremity a pin 0.

P P are the hammers, made somewhat in the form of segments, each provided with a notch or detent Q. The hammers are fast upon the shafts K.

R R are two cam-like tripping devices for the pawls M M, respectively, the pins 0 upon which engage with the inclined surfaces S S thereof, as hereinafter explained. The tripping devices R R are rigidly attached to some part of the machine.

T T are two cases, within each of which is a somewhat strong coiled spring U, one end of which. engages with the shaft K, as shown, and the other end with the casing T.

V V are the plungers. suitable openings made in studs W W on the machine and are actuated, respectively, by springs Y Y. These springs at one end Z abut against one of the studs W WV and are free at their other ends, which engage, respectively,with an enlarged head on the plungers V, so that when the plungers are forced inwardly by the blow of the hammers P, compressing the spring, and the pressure is relieved the spring will automatically return them to their primary location.

a a (see Fig. 1) are the two anvils. They are held in place by a clamping-plate Z) Z) and set-nut c c, and are so arranged as to be presented directly opposite the ends of the plungers. In Fig. 4 I show a detail of the arrangement of the anvils and plungers. The anvils a are ground true on the face, but the top and bottom edges are ground on a bevel, as shown at d (Z, and the face of the plungerV is ground to such an angle as to accurately engage with the beveled edges (1 d of the anvils to produce the desired set and upsetting or flattening of the teeth.

The saw and its carriage are best shown in Fig.-2.

c is the saw-blade, and f the carriage, provided with feeding-teeth g on its upper edge.

h hare set-screws upon which the saw-blade is supported and adjusted in the carriage. They are threaded into the two parts of the carriage, and their milled heads are accessible through openings, as shown, made in the plates which form the carriage, so that they can be readily manipulated by the finger and thumb to regulate the vertical position of the saw within the carriage.

They pass through lOO by gravity, engaging with the teeth h 72 h are some of the screws which hold' together the two parts of the carriage.

71 h are bolts which are attached to the table 77, of the machine, upon which the sawcarriage rests. These bolts pass downwardly through the solid immovable frame of the machine, as shown, and have heads h on their ends.

71 h are springs which encircle the bolts b and abut at one end against the frame of the machine and at the other of the bolts.

it represents screw-bolts which are threaded into the frame of the machine, as shown,

J and rest at their upper ends against the under side of the table 77, By these means, in a manner well known, the table 72. carrying the sawcarriage upon it, can be adjusted vertically with great exactness to give more or less set to the teeth of the'saw, as may be desired. The springs k acting through the bolts h tend to pull the table 72, downwardly, and the threaded bolts 71 afford means for determining the elevation of the table.

The feeding mechanism consists of a forkshaped piece 1', which engages with an eccentricj upon the main shaft A, and to the forked piece 1. is connected by suitable adjusting devices k a rod m, which is pivoted to a lever n, to the other end of which is pivoted a feeding-pawl 0, which in the present instance acts g on the carriage which holds the saw.

19 is a retracting-spring for the forked piece '5 and coacting parts, whereby it is normally held in engagement with the eccentricj, and also after each forward impulse the feedingpawl o is returned to primary position by reason of the rocking of the lever 72., occasioned by the spring 19.

In Fig. 5 I show a detail of the construction of the racks I. This figure is taken on the line x a: in Fig. 2 looking in the direction of the arrow. The edges of the racks are shown as dovetailed, each sliding in a correspondingly shaped slideway made between the parts (1 q of the main frame and a stay-piece 1', attached to the frame q by bolts 8 or equivalent device.

The operation of the apparatus is as follows: The saw in its carriage is introduced at the front end of the machinethat is to say, at the right-hand side, as shown in Fig. 2. The carriage, with the saw-blade properly adjusted upon it, is p shed into the machine through the slideway provided for it (shown in Fig. 3) until the blade reaches the point where the setting operation may be performed upon it. It is sometimes desirable to lift the feedingpawl o by hand during the introduction of the carriage, so that it may be pushed in until the saw-blade reaches the plungers, thus saving time. When this point has been reached, the pawl is allowed to engage with the teeth of the carriage and the machine is started. At each revolution of the main shaft the feeding device propels the carriage a distance against the heads equal to two teeth. Suitable devices are provided for the adjustment of the feeding mechanism, so that the machine will be adapted to set saws having teeth of different sizes. At each revolution of the main shaft and concurrently with the feeding operation the cams F F vertically reciprocate the racks I I, which in turn rotate the pinions J J, whereby the pawls M M move to the right and left, as indicated by the arrows in Fig. 3, swinging outwardly the two hammers P P, thereby putting the springs U under tension. The pawls carry the hammers out-wardly until the pins 0 0 engage with the inclined surfaces S S of the respective tripping-plates R R, whereupon the pawls are tripped and the hammers Preleased and thrown by the springs U U, each delivering a blow upon the head of its plunger V V, respectively. The forward ends of the plungers are driven inwardly, each engaging with the appropriate tooth on the saw, setting it against the anvil, (which is immediately behind it,) and thereupon the springs Y Y return the plungers to normal position. By the continued rotation of the main shaft the eccentrics bring back the pawls M and arms L to primary position ready for another operation.

The above-stated operation of the parts is repeated with great rapidity, and the work performed is of a remarkably accurate and satisfactory character.

It will be obvious to those who are familiar with this art that many modifications may be made in the details of construction of the parts without departing from the essentials of the invention. I therefore do not limit myself to such details.

I claim- 1. In a saw-setting machine the combination of a movable carriage within which the saw is clamped, intermittently-acting feeding devices which engage with the carriage, a pair of independently-acting and spring-actuated hammers,which operate in reverse directions, plungers adapted to be engaged by the hammers, and anvils to resist the thrust of the plungers, for the purposes set forth.

2. In a saw-setting machine the combination of a movable carriage within which the saw is clamped, intermittently-acting feeding devices which engage with the carriage, two independently acting and spring actuated hammers, one presented to the right and the other to the left, right and left plungers adapted to be engaged by the hammers, and right and left anvils adapted to resist the thrust of the plungers, the faces of the anvils being beveled opposite the teeth to set the teeth to the right and left respectively, for the purposes set forth.

3. In a saw-setting machine the combination of a movable saw-clam ping carriage, means to adjust the saw within the carriage, intermittently-acting feeding devices for the carriage, a pair of independently-acting and spring-actuated hammers, the parts being so arranged that the feeding is effected during the time the springs of the hammers are put under tension, and the hammers act during the time the feeding devices are recovering; plungers each provided with a retracted spring adapted to be engaged by the hammers, and anvils to resist the thrust of the plungers, for the purposes set forth.

4. In a saw-setting machine the combination of a carriage for the support of the saw, feeding devices adapted to engage with the carriage, reciprocating racks which engage respectively with pinions, oscillating hammers, means whereby the hammers are actuated by the racks and pinions, springs put under tension by the movement of the hammers respectively, plungers which receive the stroke of the hammers, and springs for the for the purposes set forth.

6. In a saw-setting machine the combination of a shaft, cams mounted upon the shaft, racks connected with said cams, pinions which engage said racks, pawls carried by the pinions, oscillating hammers engaged by the pawls, means to trip the pawls, springs put under tension by the movement of the hammers, plungers to receive the stroke of the hammers, and anvils to resist the thrust of the plungers, for the purposes set forth.

7. A movable carriage for supporting a sawblade composed of two plates, separate from other parts of the machine and adapted to clamp the blade between them, means such as screws carried by the plates, whereby they may be clamped together and adjustable devices located between the plates for determining the vertical position of the saw-blade between the two parts of the carriage, for the purposes setforth.

8. A carriage for supporting a saw-blade composed of two plates adapted to clamp the blade between them, adjustable devices located between the plates for determining the vertical position of the saw-blade within the carriage, and detents or teeth on one of said plates whereby the carriage and the saw-blade may be fed through the machine, for the purposes set forth.

9. The combination of a table or plate upon which the saw-carrying device rests, said table being not shorter than the saw-blade, adj usting-screws threaded into the frame of the machine whereby the respective ends of the table maybe vertically and independently adjusted, and springs connected with the said table which normally pull the same downwardly, for the purposes set forth.

10. The combination of a table or plate 11 pon which the saw-carrying device rests, said table being not shorter than the saw-blade, adjusting-screws threaded into the frame of the machine whereby the respective ends of the table may be vertically adjusted,downwardlyextending headed bolts connected with the table, and springs encircling the bolts, engaging with the heads thereof at one end and against some immovable part of the machine at the other end, for the purposes set forth.

Signed at New York, in the county of New York and State of New York, this 30th day of October, A. D. .1899.

AUGUSTUS G. SAXTON.

Witnesses:

PHILLIPS ABBOTT, EDGAR R. MEAD.