US660931A - Shingle-sawing machine. - Google Patents

Description

' No. 660,93l. Patented out. so, lmnp@l .1. w. sEAvoLT. SHINGLE SAWING MACHINE.

' (Appucacion sled .nm 2s, 1990.) (No Model.) v L 2 Sheets-Sheet l.

No. 66093l.

J. W. SEAVULT.

SHINGLE SAWING MACHINE.

(Application led .Tune 28, 1900.)

molodel.)

W/NESSES:

Tn: Noam's Pains no. PHoTLl-mo., wAsmNmoN. n. c.

Patented oct. 3o, |900.

2 Sheets-Sheet 2.

A TTOHNEYS UNITED STATES PATENT OFFICE.

JOHN WV. SEAVOLT, OF LOCK 53, MARYLAND, ASSlGNOR OF ONE-HALF TO EMMET A. VANSOOY, OF SAME PLACE, AND JERRY W. CLARK,

OF JAMESTOWN, NEW YORK.

SHlNGLE-SAWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 660,931. dated October 30, 1900. Application filed June 28, 1900.l Serial No. 21,882. \No model.)

To @ZZ whom it may concern:

Be it known that I,JOHN W. SEAVOLT,a citizen of the United States, and a resident of Lock 53, in the county of Washington and State of Maryland, have invented a new and Improved Shingle-Sawing Machine, of which the following is a full, clear, and exact description. I

This invention relates particularly to gage attachments for shingle-sawing machines; and the object is to provide a simple gage and means for automatically swinging it so that the shingles will be sawed from the block with the heads alternately in opposite directions. I will describe la shingle-sawing machine embodying my invention and then'pointout the novel features in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this'specification, in which similar characters of reference indicate corresponding parts in both the figures.

Figure l is a side elevation of a shinglesawing machine, showing my invention as ap@ plied thereto; and Fig. 2 is a front elevation of the saine.

Referring to the drawings, 1 designates the frame of the machine, from the rear side of which a swinging frame-support or arm 2 extends upward and has its upper endinclined` forward. The swinging frame. comprises hanger-rods 3 4, which are connected at the upper end and are mounted to swing on a bolt or shaft 5, supported in the upper end of the arm 2. Attached to the lower end of the hanger bars or rods 3 4 is a table 6, which forms the lower clamping member for the block to be operated upon by the saw. The upper clamping member consists of a lever 7, pivoted to an arm 8 and extended through slots in the rods 3 and 4, the forward end of said clamping-lever 7 being provided with a handle 9. vThe lower edge of the lever 7 between the hangers 3 and 4 is provided with teeth to engage in the upper end of the block.A

The swinging or work-carrying frame is designed to be moved toward and from a circular saw 10, which is mounted on a shaft ll, having bearings in the frame 1, and on this shaft are a band-pulley 12 and a balance-wheell 13. The work-carrying or swinging frame is rail 14, supported on the main frame of the- Y machine. The hangers 3 and l have downward projections, which engage against the plainly indicated in the drawings.

The gage consists of a frame ,15, which is mounted to swing von an adjusting-frame 16. The gage-frame 15 has at its center at one side lugs 17, which are mounted to rock on a rod` supported bythe adjusting-frame. The adj usting-frame has pivotal connections with arms 18 and 19, the arm 18 being rigidly connected to the shaft 20, having bearings in, the frame 1,while the arms 19 are mounted to swing on ashaft21,supported by the'machineframe. Also rigidly7 connected to the shaft 20' is an-adjusting-lever22, carrying a pawl 23 near its upper end to be engaged iu either one of notches in an arc rack24 to hold the gage as adjusted. Stop devices in the form of screws 25 are arranged at the lower and upper ends ofthe adjusting-frame. These screws may be projected more or less forward to limit the swinging movement of the frame 15. It is to be'understood that the adjustingframe 16 is atall times parallel with the adjacent side of t-he saw 10. The gage-frame 15, however, is to be swungat an angle to the side ot' the saw to alternately bring its upper and lower ends a greater distance from the saw, thus holding the block in such manner that the shingles will alternately be sawed with their heads pointed in opposite directions.

I will now describe the means for automatically rocking the gage-frame 1.` This means comprises a shifting-lever 26, pivoted at about its center to a bracket 27 on the maf chine-frame, and into the bifurcatedoupper end of this shifting-lever a pin 28, attached to the frame 15, passes. The lower bifurcated end of the lever 26 engages the opposite sides of a cam-wheel 29, havinga wavelike surface and mounted on a shaft 30. Also mounted on this shaft 30 is a ratchet-wheel 31, adapted upon a forward movement of the work-carrying or swinging frame to be e11- gaged by a pawl 32, pivoted to an arm 33,

55 outer side of said guide track or rail, as

IOC

extended downward from the table G. This pawl is so connected to the arm that upon a forward movement of the work-carrying frame or during its movement from the saw it will engage with a tooth of the ratchetwheel 3l and impart a partial rotation thereto. On the movement of said frame toward the saw, however, the pawl 32 will `yield against the resistance ofits holding-spring 34, so as to ride over a tooth of the ratchetwheel without imparting motion thereto.

In operation after adjusting the gage to the thickness of the shingle or other work to be separated from the block the block is to be placed with its lowerend on the table 6 or in engagement with the teeth thereon andthe upper end is to be engaged by the teeth of the level' 7. Of course at this time one face of the block will be held tightly against the gageframe I5. Now upon moving the work-carrying frame toward the saw, which is of course in operation, a shingle will be severed from the block, and if the frame 15 is at this time in the position indicated in Fig. 2 `the head of the shingle will be pointed downward. As the swinging frame is moved in the opposite direction the pawl 32 by engaging with a tooth of the ratehetwheel 3l will rotate the shaft 30, which will cause the cam-wheel 29 to rotate through the space of one step and swing the shifti 11g-lever 26 in such manner as t0 move the lower end of the gage-frame l5 toward the saw and to move the upper end away from the saw, so that when the next shingle is separated from the block its head portion will be upward. It is to be understood that before sawing a shingle thelblock is to be movedagainst the swinging gageframe. f

While I have described the gage in its conneclion with a saw for sawing shingles, it is to be understood that it is to be usedin sawing barrel-heads, chair-backs, seats, and similar work. To adapt the gage 'for this purpose, it is only necessary to remove the pin 28 and by means ofthe set-screws 2'5, of which there are four, adjust the plate I5` paralle] with the frame 16 and then adjust the gage to or from the saw for the required thickness of the work by means of the operatinglever.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. In a sawing-machine, a gage-supporting frame,`swinging armson which the frame is mounted, a lever for swinging the arms and holding the frame at all times parallel with the side of the saw, a gage-plate mounted to swing on the frame, and setscrews carried by the frame for engaging with the gage-plate, substantially asspecified.

2. In a shingle-sawing machine, a saw, a work-carrying frame mounted to swing toward and from said saw, a gage-supporting frame, swinging arms on which said gage-supporting frame is mounted,.a lever for swinging said arms, agage-,plate pivoted atits central portion to said carrying-frame, aswinging lever engaging with a pin on said gageplate, a cam-wheelengaging with said lever, and means for imparting step-by-step rotary motion to said cam-Wheel, substanliallyas specified.

3. Ina shingle-sawing machine, a saw, a work-carrying frame ,mounted to swing toward and from said saw, a gage mounted to swing at one side of the saw, a shifting-lever having a bifureated upper end into which a pin on the framepassea a cam with which the lower end of said shifting-lever engages, a shaft on which the cam mounted, a ratchet-wheel en said shaft, and a pawl carriedby the `Work-carrying frame for engag- .JGHN W. SEAVOLT.

Witnesses:

PETER R. LAWYER, IRVIN A.'DAWsoN.

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