US132841A - Improvement in circular-saw mills - Google Patents

Description

D. LANE.

5m provement in Circular-Saw Mills.

I No. 132,841.

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Patnted Nov. 5,1872

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UNITED STATES PATENT DENNIS LANE, OF MONTPELIER, VERMONT, ASSIGNOE TO LANE, PITKiN, AND BROOK, OF SAME PLACE.

IMPRQVEMENT IN CIRCULAR-SAW MILLS.

Specification forming part of Letters Patent No. 132,841., dated November 5, 1872.

To all whom it may concern:

Be it known that I, DENNIS LANE, of Montpelier, in the county of Washington and State of Vermont, have invented a new and valuable Improvement in Circular-Saw Mills; and I do hereby declare that thefollowing is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawing making a part of this specification, and to the letters and figures of reference marked thereon.

Figure l of the drawing is a representation of a plan view of my invention. Fig. 2 is a side view of my invention. Fig. 3- is an end view of .my invention. Fig. 4is a detail view of my invention.

My invention has relation to saw-mills; and it consists in the construction and novel arrangement of, first, the devices for regulating the feed and gig of the log-carriage second, the devices for gaging the log, all as hereinafter fully described.

Referring to the accompanying drawing, A designates the saw-frame supporting the sawshaft B, arranged transversely, and having its hearings in the boxes 0 0 To this shaft are attached the main belt-pulley D, the conepulley D and the grooved belt-pulley D E designates the pinion-shaft, holding the pinion E, through which motion is conveyed to the saw-carriage. Upon the inner end of this shaft is placed a largesized belt-wheel, F, constructed with a projecting rim, F, the outer surface of which is grooved, and receives a belt connecting said wheel tothe pulley D while the inner surface is designed to engage with a friction roller or pinion, D secured on the end of a shaft, d. The shaft 01 has its bearin gs in boxes 01 d formed on a yoke or bracket,

W, and holds on its outer end a cone-pulley, 01

coupled by means of a crossed belt, Z, to the pulley D. To the inner end of the yoke d is pivoted a cam-plate, e, which is also pivoted to a rigid standard, 0 G designates a bent rocker, pivoted midway between its ends to a rigid post, 9. This rocker is armed, at a point directly over its bearing, with a grooved stud, g, which supports the free end of the camplate 6, in the under part of which is formed a concave recess, 0 The surface of this concavity lies in contact with the grooved part of the stud g, the sides of which serve as guides to the cam-plate. The shank of said stud is adjustable vertically through a slot formed in the lug e, and is secured in position by means of a nut, e the shank being screw-form or threaded to receive said nut. The rocker G is actuated by means of a handle, H, and when the end to which said handle is attached is lowered the stud g raises the cam-plate, and with it the adjacent end of the yoke d. As the yoke supports the shaft d, the latter is necessarily raised in the above-described operation, thereby bringing the friction-roller into contact with the interior surface of the rim F. When the handle H is raised the movement of the devices connected therewith is reversed and the friction-roller relieved from contact with the rim I. If, when the roller is brought into contact with the rim F, the shaft d is properly rotating, the wheel F, with its shaft and attached pinion, will be caused to turn in the right direction for feeding or propelling forward the saw-carriage.

I represents a loose belt connecting the wheels D and F. During the forward movement of the carriage this belt has no operative function. But when the friction-roller is lowered, this belt is tightened by means of an arm, '5, on the end of the rocker, holding an anti-friction sleeve, '5, and communicates from the shaft B a reverse motion to the wheel F, thereby gigging or moving back the saw-carriage. In order to allow the yoke 01 and shaft d the necessary adjustment, the box 01* is pivoted between the arms h of a U-shaped plate or yoke, by means of set-screws h, the ends of which enter recesses in the sides of said box. The tension of these screws maybe regulated at the will of the operator. supporting the shaft B are hung in a like man nor, 0 0 being, respectively, the yokes and setscrews. The purpose of having these devices applied to the shaft B is to enable the latter to be adjusted, or to adapt itself to inaccuracies or faults in the setting of the parts of the mill, and to compensate for strain caused by the weight of logs or from other circumstances. The board while being cut passes over the top of the box 0 which is therefore constructed with a projection, 0 to hold said board. The outer portion of the log travels over a shaft,

The boxes 0 O K, arranged transversely at one end of the frame and supported by the standards 75 70 formed on the ends of a bar, L. The shaft K is graduated to regulate or gage the thickness of boards, and is provided with an adjustable collar, L secured in position by a set-screw,

L and constructed with an L-shaped arm, L

between the outer end of which and the collar is journaled an anti-friction roller, M, against which the surface of the log is placed, and in contact with which it moves. Whenever a board is cut the log is moved up against the roller M. The collar L is also provided with a stud, m, projecting downward, and designed in connection with the rib m to prevent the arm L from falling over toward the saw. Near however,the arm L may be allowed to turn over out of the way when desired. The shape of the latch n causes it to remain in the proper position when lowered, as its end rests on the cross-beam of the frame. The standards 6 g are secured to an adjustable plate, Z.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In a saw-mil], the combination, with abeltpulley, F, having a flanged rim, F, with inner and outer bearin g-surfaces, of the gigging-shaft E, the saw-shaft and pulley D the shaft (7, roller D endless band I, adjustable yoke 61 and rocking lever Gr, arranged to bear in re verse direction upon either said yoke or said band, substantially as specified.

2. The rocker G having the armi and stud g, in combination with the loose belt I, beltwheels 1) F, pivoted cam-plate e, yoke d shaft d, and roller D substantially as specified.

3. The combination of graduated roller K, adjustable arm L roller M, stud m, rib m, standard 70 70 lug n, and latch 12, substantially as specified.

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

DENNIS LANE.

YVitnesses:

lVlAHLON TAPLIN, CARROLL P. PITKIN.

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