US229399A - Shingle-sawing machine - Google Patents

Description

4 R E E R G D H (No Model.)

Shingle Sawing Machine.

ZZZ J Patented June 29, I880.

WITNESSE 'go, ATTORNEYS N. PETERS, P

(No Model.)

B. D. GREEK. 'Shingle Sawing Machine.

Patented June 29,1880.

INVENTUR M6, ATTORNEYS (N9 Model!) 4 Sfieet s- ,S11eet 3.

E D. GREER Shingle Sawing Machine.

No. 229,399. Patented June 29,1880.

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ATTORNEYS N. PETERS, FHOTO'LITHQGRAPHER. WASHINGTQN, m6.

* E. D. GREER. Shingle SawinglVIaohin. No. 229,399.

ATTORNEYS N. PETERS, FHOYO-LITHOGRAFHER, WASHINGTON n C 4 Sheets-Sham 4.

Patented June 29, 1880.

' 7 UNiTED STATES amvw Us dub-fling Quid EDWIN D. GREER, OF GREERS, VIBGINIA dZD SHINGLE-SAWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 229,399, dated June 29, 1880.

- Application filedMarch 20, 1880. (No model.)

To all whom it may concern;

Be it known that I, EDWIN D. GREER, of Greers, in the county of Grayson and State of Virginia, have invented certain new and useful Improvements in Shingle-Machines; and I do-hereby. declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

Figure 1 of the drawings is a representation of a side elevation of my shingle-machine. Fig. 2 is an end view of the same. Fig. 3 is a. transverse sectional view. Fig. 4 is a plan view. Fig. 5 is a sectional detail view. Fig. 6 is a perspective view of a frame for boards, and Fig. 7 is a perspective view of a frame for shingles.

My present invention relates to a shinglemachine; and it consists in the features of construction hereinafter fully set forth and claimed. I

A designates the saw frame or table, which is supported by suitable standards B. As the remaining timbers which enter into the structure of the main frame are subservient to purposes hereinafter described, they will be de-- scribed in their proper connection.

O designates the circular saw, which is hung upon a horizontal shaft, D. The bearings of this shaft are upon the saw-frame A, and the saw is located at one side of the said frame. It will be observed that the position of this saw enables an operator to have ready access to it for filing the teeth. The shaft D, upon which the saw is hung, constitutes the main driving-shaft of the remaining operative parts of the machine, motion being primarily imparted to said shaft by any suitable mechanical means.

E designates the carriage for the shinglebolt. This carriage is provided with two rackbars, F, formed with grooves, which constitute guides, along their inner vertical sides, as shown in the detail view, Fig. 8.

G designates a bar which slides upon the carriage between the rack-bars, and which is employed to move the shingle-bolt forward at the proper periods. This bar G is formed with'flanges at its ends, the said flanges being arranged to work in the guides of the rackbars. As an additional means for guiding the bar G, the carriage is provided with bars H, secured in position parallel with the rack-bars F, and the bar G is provided with transverse grooves, the walls of which fit upon the bars H, and consequently maintain the bar G at right angles to the rack-bars and parallel with the line of cut of the circular saw.

The feed-bar G has springs I secured near its ends, and these springs have vertical pins K,

which pass through holes in the bar G, so as to engage with the teeth of the rack-bars. These teeth of the rack-bars incline forward that is to say, toward the side of the machine at which the work is to be done; and hence while the bar G is moved forward the pins will readily slip over the teeth. The engagement of the teeth with the pins will, however, prevent any backward movement of the feed-bar unless the pins are disengaged from the racks. In order to raise the pins from the racks lprovide the feed-bar G with a vibratory rod, L, which has a handle, L, by which it may be vibrated, and I also form said rod with bent ends L which, when the handle of the rodis turned down, raise the springs to which the said pins are secured. Another device must, however, be manipulated in a somewhat similar manner before the feed-bar will be entirely free to slide back upon the carriage, and this will now be described in connection with the mechanism for effecting the forward movement of the feed-bar, which mechanism involves the principle of compound leverage, as will appear.

M designates a lever-bar, which is pivoted to the carriage at N, and O 0 represent two guide-bars for said lever, one of which bars or rods is secured to one of the rack-bars at the side thereof, and the remaining one on the top of the said rack-bar. The leverM is provided with a pivoted block, P, which slides along the side of the rack-bar, and which is guided by one of the guide-bars 0.

Two short levers, Q Q, rack-bars, and also connected with the leverM by pivots working in slots R in said .iever.

To the feed-bar are secured rack-bars S S, which are parallel with the rack-bars first described, and to the short levers Q, Q are hinged hook-pawls T T, which engage with the rackbars S S. To raise these pawls so that the feed-' are pivoted in the IOO bar may be moved back or adjusted in any desired position, a vibratory rod, U, is employed,

said rod having a handle by which it can be operated, and having also bent ends, which,

when the handle is turned the said pawls.

The lever M is actuated at certain periods for causing the forward movement of the feedbar by mechanism presently described, or it may be vibrated by hand.

The carriage is secured by bolts and nuts to two cross-heads, V V, which are arranged to slide upon rods W W, these rods being secured in the frame A parallel with the longest sides thereof.

The cross-heads V have anti-friction rollers W W, formed with circumferential grooves to receive the rods W N, whereby the carriage will slide back and forth with but little friction. Furthermore, the anti-friction rollers, being arranged between the rods, prevent any upward or sidewise deviation of the carriage.

The carriage is moved by a bar, A, running from the bar B of a reciprocating jointed rack-frame, said bar A being hinged to oneof the cross-heads V, to which the carriage is secured. This bar A is nearly parallel with the rods upon which the cross-heads of the carriage travel, and during its reciprocation it retains this approximation to parallelism with said rods, thereby obviating any friction which would be caused by the rotary motion of a pitman.

The reciprocating joint-rack, which actuates the bar A and causes the back and forward movement of the carriage, is constructed as follows: The bar B is pivoted at its lower end to a timber, O, of the main frame. A bar, D, is also pivoted at its lower end to the timber O, and these two upright bars B and D are connected so as to have a simultaneous vibration by means of the connecting-bars E E. These connectingbars are pivoted to the upright bars, so that the frame composed of the four bars has joints at the points at which the bars intersect each other. This jointed rack is reeiproeated by means of a wheel, F, having a tappet, G, which acts alternately upon two hinged bars of the jointed rack. One of these bars, which is designated by the letter H, is hinged to the bar B while the other bar, upon which the tappet acts, is hinged to the lower connecting-bar E, and is designated by the letter I. The outer end of the bar H is formed with a curved recess, K, to receive the tappet of the wheel, and this bar is suspended, when the tappet leaves it, by means of a hinged bar, L, having a slot, M through which a pin secured to the bar H works.

The bar I is hinged near its upper end to a horizontal bar, N, which is hinged to the bar D of the jointed rack frame.

During the rotation of the wheel the tappet acts alternately upon these hinged bars H and I, thus causing the reciprocation of the rack and the consequent movement of the table, so as to bring the material to be cut first down, will raise pet against the hinged bar I.

against the saw and then awayfrom it, so that the material may be fed forward the feedbar for a fresh cut.

After the tappet leaves the upper b555,-

the ends of this bar and the bar I will bein close proximity, so that a slight continuance of the rotation of the wheel will bring the tap-- The direct action of the tappet against this bar will causea rapid reciprocation of the jointed rack-frame, and likewise a rapid back motion of the carriage. As the tappet proceeds in its line of travel there will be an interval of rest for the jointed rack-frame, during which interval the feed-bar will be automatically moved forward, so as to bring the material in position for a fresh out, as presently described. This period of rest is due to the fact that after the tappet leaves the bar I and ascends in the direction of the arrow it will travel along the space between the bar I and the recess K of the bar H, and then, after entering said recess, it is obvious that the tappet will raise the bar H to a considerable extent before the tappet will have such direct action against the wall of the recess K as will move the bar H forward, and thus cause a reciprocation of the jointed rack-frame and a consequent movement of the carriage toward the saw. This movement of the bar H will not be in a right line, but in a curved path, and hence the forward movement of the carriage and of the rackframe will be considerably slower than the backward movement of the same. But little friction will be involved in the use of this reciprocating jointed rack, and its automatic operation will be readily understood from the above.

The tappet-wheel is mounted upon a shaft, 0, which has its bearings in the standards P P of the main structure. Upon this shaft 0 is a cone-pulley for changing the rate of speed. The belt from the cone-pulley passes around a pulley, Q, upon a shaft, B, said shaft B being driven by a belt connecting a bandwheel, S, with the shaft upon which the saw is hung.

The carriage stands still while the setting attachments do their work, thereby insuring a perfect adjustment of the operative parts which relate to the feed mechanism.

The setting attachments are located at the front of the machine, and comprise two arms, a a, having their center of motion upon the pivots b I). These arms have their action alternately toward each other by means of the intermeshing cog-wheels c 0, having tappets d d, which act at stated periods upon the upright bars a 0. These bars a e are hinged to the frame f, an d have connecting-rods g, which connect them with the arms a a.

The wheels 0 0 may both be ordinary toothed gear-wheels, or the wheel 0 may be a toothed wheel and the wheel 0 having its teeth formed like those of alantern-wheel. In the present instance the wheel 0 is a lanternwheel, its teeth not being shown.

If desired, the tappets d d. may be adjustable toward or away from the axes of their respective wheels. This may be accomplished in any suitable mechanical way, as by a slot and nuts.

A rope or, .hain, h, connects the lower ends of the arm a, and weights (or a weight) are employed,.in connection with such chain or rope, to throw the upper ends of the arms it apart to the limit of the ends of a guide, t.

The driving one of the cog wheels, 0, is mounted upon a shaft, 70, which has a lantern gear-wheel engaging with a lantern-pinion, Z, this lantern-plnion being upon the shaft on which the cone-pulley, hereinbefore described, is mounted. The cog or miter wheels 0 0 are hung horizontally at the front of the machine.

The arms a. a. are sufficiently wide apart at their top ends to receive the main lever of the carriage with its deviation, and as the machine is operated the adjustable tappets upon the gear-wheels act upon the arms or bars which connect with the arms a a, so as to cause arms a a. to act alternately upon the main lever of the carriage, thereby causing one of the carriagepawls to act upon one of the rack-bars which I are attached to the feed-bar and feed the said bar forward, while the remaining pawl will be thrown back for engagement with another tooth of a corresponding rack-bar secured to the feed-bar.

The carriage may be removed from the crossheads to which it is secured, and a cut-off carriage, m, be substituted therefor. This carriage is designed for cross-cuttin g, and is used for cross-cutting boards for boxes. Again, this carriage may be replaced by a carriage which is adapted for cutting laths, no claim being, however, made to this latter carriage.

In order to separate the sawdust from the shingles, I provide a chute, 10, secured to the side of the machine in position to catch all the sawdust, and at the same time throw off the shingles.

a is a rack-bar connecting with a lever, 11, which acts by means of a roller, b upon the belt 0 This lever is actuated by the oper ator, so as to tighten up the belt, and thus cause the rotation of the shaft R and of the cone-pulley. By shifting the rack-bar the-pressure of the roller of the lever upon the band may be relieved, and then the jointed reciprocating rack will cease its operation, while at the same time the saw'will continue its operation.

The feed-bar has a longitudinal channel or recess, 1, in which is pivoted a lever, 2. This lever connects with sliding clamps 3 by connecting-rods 4 4. These clamps are employed to engage the shingle-bolt, so as to hold it against the feed-bar. The clamps have holes toreceive the outer ends of these connectingrods, and the distance between the clamps may be varied by adjusting the rods in the holes of the clamps.

The lever 2 is adjusted in place so as to contract or widen the distance betweem the clamps, and it is held in such adjustment upon a sector-rack, 5.

Having thus described the construction of my machine, what 'I claim, and desire to secure by Letters Patent, is-

1. The herein-described jointed reciprocating rack, comprising a jointed frame formed by two vertically-arranged vibratory bars with connecting-bars E, said frame being provided.

with two independent pivoted levers extended toward the center of the frame in position to be acted upon alternately by the tappet of a wheel, one of the said levers being arranged so that the action of the tappet upon it produces an immediate movement of the rack, the remaining lever being arranged to be lifted by the tappet before the tappet acts against it so as to throw the frame or rack forward, substantially as herein specified.

2. The combination of the wheel F, having a tappet, G, with the herein-described jointed rack frame comprising the pivoted vertical bars B and D and the horizontal pivoted connecting-bars E, also the bars I N, pivoted to each other and to the jointed frame, the pivoted bar H, formed with a notch or recess, K, at its inner end, and the pivoted bar L, formed with a slot, M and connected with the bar H, as described, said elements being arranged for operation substantially as setforth.

3. In a saw-mill carriage, the feed bar G, arranged to slide over the rack-bars F, in combination with the racks S, levers M Q, and the hook-pawls T, connecting with the levers Q, said parts being constructed substantially as set forth.

' 4. The combination of the herein-described carriage with the compound levers and two vibratory arms arranged to act at periods upon the main lever of the carriage, said arms be- 7 ing actuated at stated periods by tappets upon intermeshing cog-wheels, substantially as specified.

5. The herein-described arrangement of the feed-bar G, arranged to slide upon the carriage, the springs I, actuating-pins K, vibratory rod L, having a handle, L, and bent ends L working under springs, substantially as set forth.

6. The combination of the carriage with the lever M, guide-bars O, pivoted blocks P, running on said guide-bars and pivoted to the lever, short levers Q, operated by lever M, the rack-bars S, and the pawls T, attached to levers Q, and catching in rack-bars S, substantially as set forth, and for the purposes specified.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

EDWIN D. GREEK.

Witnesses:

JAMES J. SHEEHY, ROBERT EVERETT.

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