US445505A - Sawing-machine - Google Patents

Description

B. E. 55 A. F. HARRELD.

(No Model.) '3 Sheets-Sheet 1.

SAWING MACHINE.

No. 445,505. Patented Jan. 27, 1891.

' 3 Sheets-Sheet 3 B. E. & A. P. HARRELD.

Patented Jan. 27, 1891.

UNrrEn STATES PATENT BENJAMIN E. HARRELD AND ANDERSON F. I 'IARRELD, OF HALLOW'ELL, KANSAS.

SAWING-MACHINE,

SPECIFICATION forming part of Letters Patent No. 445,505, dated January 2'7, 1891.

Application filed April 10, 1890- Serial No. M71419 (N Infidel-l machines, and particularly to a gang crosscut saw for sawing cord-wood or other material when it is desired to cut the same into a series of pieces of uniform length.

The object of our invention is to provide a machine of the character described that shall consist of few parts and can be easily manipulated in its various operations, and one in which the parts are so arranged that the material is held rigid while being sawed.

A further object is to provide an improved construction whereby the material can be eas ily fed to the machine.

\Vith these objects in view our invention consists, essentially, of a main frame adapted to carry the operating mechanism, receive and hold the material, and a supplemental frame hinged to the main frame carrying the saws and adapted to be elevated from the main frame for the purpose of allowing the material to be fed to the machine.

Our invention consists, further, in certain details of construction and combination of parts, as will be more fully hereinafter described, and designated in the appended claims.

In the drawings forminga partof this specification, and in which the same numerals of reference ind cate the same parts, Figure 1 is a side view of our improved machine. Fig. 2 is a top plan view of the same. Fig. 3 is an end view, and Fig. at is a detail view, of the saw.

In the embodiment of our invention we employ a main frame, said frame comprising the vertical end section 10 and a horizontal body portion 10". The vertical end section 10 is composed of the side standards or uprights 10, the upper cross-piece 10, the lower crosspiece 10, and the vertical standards 10 arranged about midway between the standards 10 and secured at their upper and lower ends to the upperand lower cr0ss-pieces, respect ively, said standards being parallel, as shown.

Caster-wheels 10 are mounted upon the lower ends of the uprights 10, whereby the machine is rendered easily portable. The horizontal portion is composed of a vertical end frame 1O of less height than the end portion 10 and the horizontal side bars 10", which rigidly connect the end frames 10 and 10.

Handles 1O are secured to the frame-piece 10 at the sides of the same, by means of which the machine can be easily tilted and transported upon the caster-wheels.

A supplemental horizontal frame 11 is hinged to the vertical end portion 10 upon the side adjacent to the horizontal portion 10" and at a height equal to the height of the upper cross-piece of the end frame 10. This supplemental frame 11 is composed of the side bars 11, end cross-piece 11", and longitudinal center bars 11, the side bars being hinged to the uprights 10 and the center bars to the standards 10 The adjacent side and center bars are braced by the transverse rods 11 and 11 The horizontal portion 10 of the frame is provided, also, with longitudinal center bars, and upon said bars is supported a saw-buck 12, and to the rear of said buck is secured an additional buck 12 for holding small wood.

While any number of saws could be used with our machine, we prefer to use only two, and each saw 13 is supported vertically within a horizontal rectangular frame 1 1, said frame sliding in ways 1 1, formed in the adjacent side and center bars of the supplemental frame. This supplemental frame 11 is adapted to be raised from the main frame carrying the saws with the same to permit the wood being fed to the machine and laid upon the buck 12, and to hold the wood upon said buck we employ a locking-bar 15, said bar being pivoted to the center of the end'frame 10", passing obliquely upward over the buck between the center bars 11 beneath the upper cross-piece 10 of the vertical end portion 10 and between the standards 10 projecting slightly beyond the said standards, the end of said bar being shaped into a handle. Ratchet-faced plates 16 are secured to the standards near their upper ends, the teeth of said plates being adapted for engagement with the pawls 17, pivoted to the bar 15, whereby when the said bar is pressed down upon the wood in the buck it will be securely locked in place. A coiled spring 18 is arranged between the locking-bar and the end of the buck, said spring serving to throw the bar upward when the pawls are released from the ratchet-faced plates.

To raise and lower the supplemental frame, we employ a lever 19, pivoted to an offset 19, secured to one of the standards 10 said lever extending vertically upward, and near its upper end is pivoted a horizontal link-arm 20, the opposite end of said arm being pivotally connected with the upper arm of a cranked rock-shaft 21, said shaft being journaled upon the under side of the longitudinal center'bars of the horizontal portion 10 and to the lower arm of said rock-shaft is attached a link-arm 22, the opposite end of said arm being pivoted to the lower end of a bar 23, the upper end of said bar 23 being rigidly connected with the transverse cross-bar 11. There are two bars 23, one secured to each bar 11, the lower ends of said bars being connected by a rod 23. Brace-rods 24 extend from each bar 23 diagonally upward to the transverse bars 11.

From the above it will be seen that by throwing the lever for-ward in the direction of the arrow 1 the upper link-arm 20 and upper arm of rock-shaft 21 will move in the direction of arrow 2, the lower arms in the direction .of arrow 3, the bars 23 in the path of arrow at, and the supplemental frame will be moved upward in the direction of arrow 5. The reversal of the operations will accomplish the lowering of the frame. I

In practice we prefer to move the saws alternately in opposite directions, whereby the material being sawed is not so liable to be thrown off the buck, as the saws, moving in opposite directions, tend to equalize each others force. To accomplish this alternate opposite reciprocation, we employ a doublecrank shaft 25, which is journaled upon the outer side of the vertical end portion 10, and provided at one of its ends with a pinion 26. An interior-toothed driving-wheel 27 is mounted upon the side of the adjacent upright 10 and meshes with the aforementioned pinion to operatethc same. Pitman-rods 28 are connected with each crank-arm of the shaft and also with the lower end of the adjacent saw. Balance-wheels 29 are mounted upon the shaft at each side of the frame and within the same. By revolving the drive wheel the crank-shaft is operated, the pit men thrown into action, and the saws reciprocated in opposite directions owing to the construction of the crankshaft. Inclined boards 30 are arranged upon the outer side of the buck and incline downward and outwardly to the sides of the main frame, said boards being adapted to act as a chute for all dust and dirt produced by the machine.

The machine can be changed to saw material in different lengths by simply adjusting the saws laterally within their respective frames.

The operation of our improved machine having been been described in part in connection with the foregoing description, and also being apparent to every one skilled in the art to which it relates, a further description is unnecessary.

Having thus described our invention, what we claim as new is 1. In a sawing-machine, the combination, with a main frame, of a supplemental frame, the hand-lever pivoted to the main frame, a rock-shaft mounted also on the main frame,

the link-arm connecting said shaft and hand- 8 lever, and the link-arm connecting the shaft and supplemental frame, whereby when the lever is thrown back the supplemental frame will be elevated, and vice versa, substantially as shown and described.

2. In a sawing-machine, the combination, with a main frame having a buck arranged upon the longitudinal center of the same, and dust-chutes arranged upon each side of the buck, of a supplemental frame hinged to the main frame and divided longitudinally into two horizontal saw-carrying frames, and saws arranged to reciprocate in said frames, substantially as shown and described.

BENJAMIN E. HARRELD. ANDERSON F. HARRELD. Witnesses:

A. \V. JAY, BENJ. D. BEALL.

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