US411580A

US411580A - Shingle-sawing machine

Info

Publication number: US411580A
Authority: US
Publication date: 1889-09-24
Anticipated expiration: 1906-09-24

Description

2 Sheets-Sheet 1.

(No Model.)

. J. OHALLONER.

SHINGLE SAWING MACHINE. No. 411,580. Patented Sept. 24, 1889K Kfi W12 SSES [mum 2072 MW; 47 1 M g .flZZm-ney N. PETERS. PhcbLilhngrzlpher, Washinginn. D- (II 2 Sheets-Sheet 2.

(No Model.)

HALLON SHI SAWING M NE, No. 411,580. Patented Sept. 24, 1889.

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NITED STATES Prion.

JOHN CHALLONER, OF OSHKOSH, \VISCONSIN.

SHINGLE-SAWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 411,580, dated September 24, 1889.

Application filed November 17, 1888. Serial No. 291,176. (No model.)

To aZZ 10700712, it may concern.-

Be it known that I, J OHN CHALLONER, a citizen of the United States, residing at the city of Oshkosh, in the county of Winnebago and State of \Visconsin, have invented certain new and useful Improvements in Shingle Sawing Machines and the Like; and I do declare the following to be afull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to improvements in shingle-sawing machines of modern construction, and is adapted as well to heading sawing-machines.

Heretofore it has been common to throw away a spalt from each block when the block became sawed down so that the dogs 'were not liable to grip it, thereby wasting timber, and, in automatic machines more particularly, rendering it extremely dangerous for the operator, on account of the necessity of reaching in before the saw, to extract the spalt.

The objects of my improvements are, first, to provide means for feeding the spalt until it is entirely sawed; second, to prevent the spalt from wedging between the dog and the saw; third, to reduce to a minimum the danger to the Sawyer or person who operates the machine, and, fourth, to provide means for adjusting the tilting table and guard to the saw and dog. I attain these objects by the construction and mechanism illustrated in the accompanying drawings, in which Figure 1 is a plan of one end of a machine embodying my invention. Fig. 2 is a sectional view on line at y, Fig. 1, the lower part of the frame being also shown in section to better illustrate the mode of rocking the tilting table. Fig. 3 isa side view of one of the push-pins with asection of the saw and spalt. Fig. 4 is a vertical sectional view taken on a plane passing through the tilting table in front of the saw, a block from which the shingles are to be sawed being shown in position. Fig. 5 illustrates a detail showing how the guard may be vertically adjusted.

Similar letters of reference refer to similar parts throughout the several views.

A is the carriage, supported by standards A A and sliding in grooves a a; B, the tilting table, and C the saw running toward the left side of the figure.

K is the shingle-block.

D D are the dogs which grip the block, one of them, as D, being stationary, and the other, as D, being movable. These dogs and the mechanism by which the table is tilted are operated in the same manner as shown and described in Patent No. 214,490, dated April 22, 1879, to which I refer for a detailed description. Briefly, their construction is as follows: The carriage reciprocates in guides, as shown in Figs. 1 and 2. A lever5, pivoted to the carriage at 6, is connected with an eye 7 on the movable dog D. This lever normally presses the dog inwardly by reason of the pressure of the spring 9. Fixed to the frame of the machine is a guide 8, set in the path of the lever 5, so that when the carriage reaches its rear limit a roller on the end of the lover will ride up the guide and force the movable dog outwardly, permitting the spalt to drop upon the tilting table. In order to tilt the table alternately in opposite directions, so as to produce a proper taper to the shingles, a roller 1, provided with a zigzag groove 0 on its circumference or periphery is mounted on the frame, and a lever 23 has one end entering the groove and provided with a suitable roller to make a smooth movement. The other end of the lever is pivotally'connected with an arm 4, connected to the tilting table. The table is mounted on a universal joint, as shown at 10 11. The arm of the tilting table rests on a roller 12, adjustable vertically by means of a take-up link 13, so as to raise or lower the table and thus regulate the thickness of the shingles. On the carriage is secured an arm 14., which carries a pawl 15, said pawl engaging a pin on the periphery of the roller 1 on each forward movement of the carriage and shifting the roller sutl'iciently to rock the lever 3. Hand-plates E E are mounted on the carriage, against which the rear side of the block rests.

F F are push-bars attached to the handplates E E, and passing around and under the saw when the carriage is forward, as shown in Fig. 3. 1

G is a guard attached to the tilting table by the arms t i, said guard lying parallel with the plane of the saw and having its front end as close to the saw as possible,just enough space being left between thetwo to permit a free movement of the saw. The upper edge of the guard is above the upper level of the saw and close to the lower side of the dog, there being only enough space between the upper side of the guard and the lower side of its overhanging dog to permit the latter to move forward and backward freely. (See Figs. 1 and 2.) This guard is on the side of the tilting table toward which the saw runs, and when the spalt drops from the dogs it falls inside of the guard, against which it finds a firm support. It is desirable to have the guard adjustable, so that as the saw is filed down the guard may be moved forward. I therefore attach the tilting table to the cross-piece II by means of set-screws m 'm, which slide in slots an, and by being screwed down against the washers s s engage the sides of the slot. I thereby furnish a means of adjusting the entire tilting table, as well as the guard, to the saw. I provide, also, another adjustment of the guard G, so as to permit the guard to be set at different heights. The importance of this adjustment arises when it is desired to saw thicker shingles. If the tilting table is lowered to accomplish this end, the guard would no longer form a reliable abutment for the block, because it would fall below the sawing-line and there would be a tendency of the block to wedge between the saw and the guard. In order to provide this adjustment, the outer ends of the arms 71 t' are turned up obliquely at it, (see Fig. 5,) and the guard is pivotally connected. By turning the oblique ends up or down I raise or lower the guard to adjust it perpendicularly to the plane of the top surface of the saw.

hen the block is sawed down so thin that the dogs fail to grip it, as shown in Fig. 3, the push-bars F F push it to the saw and the guard G prevents the saw from pushingit off the table. The sawyer can thereby feed one block on top of another before the first block is completely sawed, as the push-bars push the so-called shims or spalts through, as well as the full-sized shingles.

Heretofore sawyers have frequently injured their hands by reaching in before the saw to extract a spalt. My improvements obviate the necessity for such risk; also, in shinglesawing machines, particularly after a spalt has become so thin that the dogs fail to grip it, the guard Gprevents it from turning edgewise with the motion of the saw and being drawn between the dog and the saw the thinnest end forward, so as to form a Wedge to bend or clog the saw.

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

1. In a shingle-sawing machine or the like,

the combination of a guard attached on the side toward which the saw runs, with the tilting table capable of being adjusted to the saw, and push-bars attached to the carriage so as to extend around and under the saw when the carriage is forward, substantially as and for the purpose set forth.

2. In a shingle-sawing machine or the like, the combination of an adjustable tilting table supporting a guard on the side toward which the saw runs, with push-bars attached to the carriage so as to pass around and under the saw when the machine is in motion,substantially as and for the purpose described.

3. In a shingle-sawing machine or the like, push-bars attached to the carriage and sliding in grooves or recesses in the table, and being bent forward so as to reach around and under the saw when the carriage is forward, substantially as shown and described.

4.. In a shingle-sawing machine or the like, the table provided with sides adjustable to and from the saw, said sides being attached to the cross-bar H by means of the set-screws m m, sliding in the grooves or recesses 01 'n and bearing against washers s s, to engage the sides, and a guard G, secured to one of the adjustable sides, substantially as and for the purpose set forth.

5. In a shingle-sawing machine, a guard attached beneath the dog on the side of the machine toward which the saw runs, said guard being vertically adjustable, so that its upper edge may be always kept above the upper side of the saw.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN CHALLONER.

W'itnesses:

JAMES H. MERRILL, ALICE JoNEs.