US1215527A

US1215527A - Circular-saw machine.

Info

Publication number: US1215527A
Authority: US
Inventors: Wilbert H Harding
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-05-25
Filing date: 1915-05-25
Publication date: 1917-02-13
Anticipated expiration: 1934-02-13

Description

W. H. HARDING.

CIRCULAR SAW MACHINE.

APPLICATION FILED MAY 25, 1915.

1,215,527. Patented Feb. 13, 1917.

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CIRCULAR SAW MACHINE.

APPLICATION FILED MAY 25. I915.

1,215,527. Patented Feb. 13,1917,

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UNTED STATES TE T QFFTC.

WILBERT H. HARDING, OF FORT WAYNE, INDIANA.

CIRCULAR-SAW MACHINE.

Application filed May 2-5, 1915.

To all whom it may concern:

Be it known that I, lVILnERr H. HARDING, a citizen of the United States, residing at Fort lVayne, in the county of Allen and State of Indiana, have invented certain new and useful Improvements in Circular-Saw Machines, of which the following is a specification.

My invention relates to saws, and more particularly to a new and improved circular saw and controlling mechanism therefor.

The primary object of my invention is to provide an improved circular saw particularly adapted for metal work, such as cutting metal rods, tubes, and the like.

'Another object of my invention is to provide an improved work holder for use in connection with my improved circular saw.

A further object of my invention is to provide improved means for controlling the saw, as well as means for automatically withdrawing the same from operative position.

A still further object of my invention is to provide a new and improved gage for use in connection with my improved saw.

With the above and other objects in view my invention resides preferably in the construction, combination, and arrangement of parts as hereinafter set forth in the specification and illustrated in the accompanying drawings, in which Figure 1 is a side elevation of a saw constructed in accordance with the preferred embodiment of my invention.

Fig. 2 is a front elevation of the same.

Fig. 3 is a top plan view of the same.

Similar reference characters indicate similar parts throughout the various views of the drawings.

Referring more particularly to the drawings, in which the preferred embodiment of my invention is illustrated, I provide a base 1 having the opposite sides thereof enlarged as indicated at 2 and 3 for a purpose which will hereinafter appear. A rearwardly extending arm a formed integral with the base 1 is provided, said arm 4 having the free eX- tremity thereof bent upwardly to provide a supporting bracket 5 for a purpose which will hereinafter appear.

The portions 2 and 8 of the base 1 are provided with upstanding ears 6 and 7, respectively, which serve as bearings for a transverse supporting shaft 8. As shown to ad Specification of Letters Patent.

Patented Feb. 13, 1917. Serial No. 30,381.

vantage inFigs. 1 and 3 these bearings 6 and 7 are disposed on the rear ends of the enlarged

portions

2 and 3 and substantially intermediate the length of the base 1 and arm 1.

The forward ends of the enlarged

portions

2 and 3 are provided with

upstanding pedestals

9 and 10, respectively, said pedestals being adapted to support a V-shaped trough 11 which serves as a work holder.

The saw carrying frame is designated generally by the numeral 12 and comprises a substantially U-shaped body having a handle portion 12 and supporting rocking

arms

13 and 14. The supporting arms'13 and 14 are enlarged on their lower extremities as at 15 and 16 andare provided with transversely extending openings through which the shaft 8 is adapted to pass. The shaft 8 is preferably stationary and is secured in position by a set screw 17. The arms 13 and 1d are enlarged adjacent the handle 12 to provide bearing

portions

18 and 19 in which a driven shaft 20 is journaled for rotation. A circular saw 21 of any approved type may be mounted on one of the extremities of the shaft 20, said shaft-being provided with an enlarged portion 22, and a locking nut 23. The nut 23 is adapted to engage the saw 21 and retain the same in position between said nut and the enlarged portion 22. The opposite extremity of the shaft 20 has mounted thereon a grooved pulley 2-1. A strengthening web 25 extends transversely of the frame 12 between the arms 13 and 1-1- and is preferably formed integral therewith. The transverse strengthening web is enlarged, at the point 26 substantially intermediate its length for a purpose which will hereinafter appear.

I have provided means for imparting rotary motion to the saw 21 which includes a driving pulley 27 mounted freely on the shaft 8, said pulley 27 having another pulley 28 formed integral therewith. Motion is imparted to the shaft 20 from the pulley 27 through the medium of a belt 29 or the like, said belt being trained over the

pulleys

24 and 27, as shown to advantage in Figs. 1 and 2. In order to maintain the

pulleys

27 and 28 in alinement an enlarged portion 30 is provided on the base 1 and a retaining washer, collar or the like 31 is carried by the shaft 8, said enlarged portion 30 and collar 31. serving to prevent longitudinal movementof the

pulleys

27 and 28 on the shaft 8. Any suitable source of motive power may be applied to the pulley 28.

A retractile spring 32 is connected at one of its extremities to the saw carrying frame as indicated at 33, the opposite extremity of said spring being connected as at 3st to the upper extremity of the supporting bracket Means for rocking the saw frame is provided which includes a rope, chain or the like 35 connected to the enlarged portion 26 of the strengthening web 25 and trained over a pulley 36 supported in bracket arms 37 from one of the under faces of the work support 11. The free extremity of the operating medium is connected to a foot pedal 38 of any desired form.

I have provided a simple and improved gage which is carried by the supporting

pedestals

9 and 10 and includes a rod 39 ad justable to various lengths relative to the work holder 11. The rod 89 is secured in a desired position by a set screw %0 mounted in the pedestal 9. One extremity of the rod 39 carries an enlargement and comprises a plate, disk ll or the like, against which material to be cut is adapted to abut. The rod, if so desired, may be graduated with a scale of any kind.

From the above description taken in connection with the accompanyingdrawings, itis thought that a clear and comprehensive understanding of the construction, operation, and advantages of my invention may be readily gathered. It will be noted that when i is desired to cut a metal rod, pipe, or the like, the same may be deposited on the work holder 11. The gage ll may now be set to the desired position and the work moved to abut the same. Applying power to the driving mechanism of the saw, the same will be revolved in the proper direction. By depressing the foot pedal 38 the saw-carrying frame may be made to rock to the dotted line position shown in Fig. l, whereupon the cutting edge of the saw will be brought into engagement with the work, quickly and accurately, severing that portion of the same which extends beyond the terminal of the work holder. The saw 21 is so disposed relative to the terminal of the work holder 11 that, when the same is moved into the position shown in dotted lines in Fig. 1, the inner face thereof will very nearly engage the terminal of the work holder 11 so that a clean accurate cut may be assured. If it is desired to rock the saw frame by hand instead of by the foot pedal,

the handle 12 may be readily grasped andthe saw operated thereby. It will be noted that the shaft 8 serves both as a supporting bearing member for the frame and as a Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

bearing shaft for the driving pulleys 27 and 2-8.

While I have shown and described my invention as possessing a peculiar form and construction, it is desired that it be understood that I may make such changes in the details thereof that do not depart from the spirit and scope of the invention as claimed.

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

1. In a circular saw machine, a base having a frame pivotally mounted thereon, a saw shaftin said frame, a driving shaft on sa id base about which said frame is adapted to rock, a strengthening web on said frame, and means connected to said web for rocking said frame to move the saw into opera tive position.

2. In a circular saw machine, a base haw ing a frame pivotally mounted thereon, a driving shaft on said frame carrying a circular saw, a driving shaft on the base about which said frame is adapted to rock, a strengthening web on said frame, a flexible connection fixed to said web, and means secured to the free end of said flexible connection for rocking the frame to move the saw into operative position. r

3. The combination with a circular saw machine including a base having a rocking frame thereon, a saw shaft in said frame, a driving shaft on said base about which the frame is adapted to rock, a work-holder and guide carried by the base formed of substantially V-shaped figuration, a plurality of standards formed on said base for supporting said work-holder, and means for rocking the frame to move the saw into operative position.

l. The combination with a circular saw machine including a base having a rocking frame thereon, a saw shaft in said frame, a driving shaft on said base about which said frame is adapted to rock, a strengthening web on said frame, a work-holder and guide carried by the base formed of substantially V-shaped figuration, a plurality of standards formed on said base for supporting said work-holder, means connected with said web for rocking the frame to move the saw into operative position, and spring means connected with the frame and with the base for returning said ,frame to inoperative position.

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

v VVILBERT H. HARDING.

lVitnesses L. D. Gnonoxnn, R. F. Ronnnn.

Washington, D. C.