US124142A

US124142A - Philandee p

Info

Publication number: US124142A
Authority: US
Publication date: 1872-02-27
Anticipated expiration: 1889-02-27

Description

-Parfum. .Improvement in Circular Saw Mi-Ils.

No. 124,142. Patented Feb.27, 1872.

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Fig. G INVENTB.

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12eme PHILANDER P. LANE, oE CINCINNATI, onto, AssIeNon To LANE a BoDLEY,

0E sAME PLAGE. i

IMPRVEMENT iN CIRCULAR=SAW MILLS.

Specification forming part ofLetters Patent No. 124,14?, dated February 27, 1872.,

I, PHILANDEE P. LANE, of Cincinnati, Hamilton county, Ohio, have invented a new and useful Improvement in GirculanSaw Mills, of which the following is a specification:

This is an improvement in the class of com.- bined feed and reverse apparatusl for saw-mills which enables the sawyer, by means of a simple lever, to either advance, stop, or back the carriage without arresting the rotation of the saw or disconnecting the motive power, and my invention consists in a mechanical arrangement, whereby the reversing-pulley, which communicates the backing motion to the pinion-drum, is made to acquire its proper velocity from the driving-pulley before coming in contact with the piniondrum, the connection between the lever and the said reversing-pulley being also such as to insure constant contact of said pulley with both the driving` and the driven surfaces during the entire reverse stroke of the carriage, and this although one or more of said surfaces may become irregularly worn. The invention relates particularly to the feed and reverse motion of myself and S. R. Smith, subject-matter of patent No. 22,- 268, issued December 7, 1858, to Lane & Bodley, assigiees, which is the basis represented.

Figure l is a perspective view of a port-ion of a circular-saw mill embodying my invention, the parts being set for giggingback.77 Figs. 2 and 8 are elevations, showing the positions of the operative parts for the forward stroke and for the backward stroke respectively.

A is a portion of the frame of a circular-saw mill 5 B, its saw-arbor 5 C, drivin g-pulley on sawarbor 5 D, the pinion, which engages with the carriage-rack E, F, the shaft of same; G, the drum upon the pinion-shaft. His the small friction-pulley, which, when brought into contact with the drum Gr, operates to impel the log-carriage forward. One end of the shaft I of the frictioupulley H is journaled in a pivot giinbahbox, J, and its other end in a gimbalbox, K, which rests in one end of a rocker, L, whose opposite end supports the reversing` friction-roller in a peculiar manner, to be hereinafter explained. vThe shaft J carries a step or graduated pulley, M, which is driven by a band, N, from a corresponding pulley, O, upon the saw-arbor. l is the hand-lever on one end of shaft Q, whose other end has a crank, R, connected by a pitman, Y, with a toggle, W X.

All of the parts above recited have been used before.

The rear extremity of the shaft s of the reversing-pulley S is journaled in a pivot gimbalbox, T. The gimbal-box U, which supports the front journal of shaft s, is not attached directly to the rocker L, but to the upper end of an arm, V, that is pivoted at or near its mid height to one end of the rocker L, and has its lower end pivoted to the upper member W of the toggle W X.

The operation is as follows: It being desired to reverse or gig back7 the carriage, the lever P is shift-ed from its position in Fig. 2 to its position in Fig. 3. This mot-ion of the lever, by drawing back the pitman Y, acts through the toggle W X, to elevate the feedpulley, and to draw downward and slightly inward the lower end of arm V, so as to throw its upper end downward and outward, and, by so doing, to'bring the reversing-pulley S in contact with the live or driving-pulley C, of whose motion it partakes, and immediately afterward to bring said pulley in contact with the piuiondrum Gr, imparting to the latter, and through it the carriage, a rapid retrograde or gigging-back motion. The lever, being brought to a vertical position, releases both friction-pulleysfrom contact with the piniondrum; and a motion of the lever toward thel position shown in Fig. 2 reverses the abovedescribed actions of the several parts, the pulley S first leaving the pinion-drum, and then the driving-pulley and the two members lV X of the toggle, approaching coincidence, operate by elevating the reverse end of the rocker to depress its other end, and to press the pulley H rmly upon the pinion-drum. The relative position of the two members lV X ofthe toggle at this juncture becomes a lock, which holds the pulleyLl with great powerto its work, with little or no labor to the sawycr until a backward movement again becomes necessary. My described flexible or yielding connection of the pulley S with the rocker L, and the described toggle and pitman connection o f the former with the operating lever, insures the proper momentum of the reversing pulley before striking,` the pinion-drum. It also enables the said reversing-pulley to act continuously and with equal pressureon both the opposing surfaces, and tl1is even after one or both of said surfaces have become unequally worn.

Claims.

I claim herein as new and of myinventionl. The eXible supportVfor the bearingUof the reversing or gigbael; pulley S, the 4sii-me operating, as described, to give seid pulley an equal bearing on the drivin g-pulley G and piniondru1n G.

2. The combination of the arm or Vlever V set my hand.

v PHILANDER P. LANE.

Witnesses:

GEO. H. KNIGHT, JAMES H. LAYMAN.