USRE10140E - Feed and gig works for saw-mills - Google Patents

Description

J. H. WATSON.

FEED vAND GIG WORKS PoR SAW MILLS.

No. 10,140. Reissued'JuneZO, 1882.

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UNTED 'STATES' PATENT l(huilen. s

JAMES-H. WATSON, OF TANVAS CITY, MICHIGAN.

FEED AND GIG WORKS FOR SAW-MILLS.

SPECIFICATION forming part of Reissued Letters Patent No.l 10,140, dated June 20, 1882.

Original No. 224,745), dated February 17, 1880. Application for reissue filed July 12,1880.

To all whom it may concern IBe it known that 1, JAMES HENRY WAT- SON, of Tawas City, in the county ot Iosco and State of Michigan, have invented a new and Improved Feed and Gig Works for Saw-Mills, of which the following is a specification.

Figure l is a side view of my improved device. Fig. 2 is a front view ofthe same. Fig. 3 is a horizontal section of the same, taken through the line m ai, Fig. 1. Fig. 4 is a detail section of one of the friction-wheels.

The object of this invention is to furnish an improved feed and gig mechanism for the carriages of circular-saw mills, which shall be simple in construction and convenient and effective in use, allowing the change of motion to be made quickly and easily. f

The invention consists inV the various combination of the two levers, the two arms, the connecting-rods, the U-bar, sliding` bearings, friction-wheels, and shaft, all as more fully hereinafter set forth.

In the accompanying drawings, which form a part of this specification, A represents the frame of the machine.

B represents the drivin g-shaft, which revolves in bearings attached to the frame A or to other similar supports. To the shaft B is attached a pulley, C, around Whichpasses a belt, D, which also passes around a pulley, E, attached to the feed friction-shaft F.

In practice the feed friction-shaft F will be driven from the saw-arbor (which is not shown in the drawings) and the saw-arbor will be driven from the drivin g-shaft B. The shaft F revolves in a bearin g, f', attached to the frame Aor to abracket or arm attached to the same frame, and in a bearing, f2, attached to the inner end of the friction-lever Gr.

To the shaft F is attached a small frictionwheel, H, which, by the movement of the lever Gr, is thrown into and out of gear with the large friction-wheel I, attached to the feedshaft J. The shaft J revolves in bearings attached to the frame A, and to it is attached the small gear-'wheel K, by which the carriage is moved'forward and back.

To the driving-shaft B is attached a pulley, L, around which passes a belt, M. The belt M also passes around a pulley, N, attached to the gig-shaft O, which revolves in bearings attached to the frame A, and to itis attached a large friction-wheel, P, placed directly below and at a little distance from the frictionwheel I.

The friction-lever G is pivotcd to a standard, Q, attached to the frame A, and to its outer end is pivoted the upper end ot' a short connecting-rod, R, the lower end ot' which is pivoted to the outer end of an arm, S,for1ned upon or rigidly attached to .the rock-shaft T, which works in bearings attached to the frame A, and to it is rigidly attached, or upon it is formed, the feed-lever a, by means of which it is operated. To the rock-shaft T is also rigidly attached, or upon it is formed, an arm, V, to the end of which is pivoted the end of a short connecting-rod, W. The other end of the connecting-rod W' is' pivoted to the upper end of the gig-lever X, the lower end ot' which is pivoted to a support attached to the frame A.

To the gig-lever X is pivoted the end oi' a connectingbar, Y, which is made in two parts connected by a nut, y', having a right screw-thread cut in one end and a left screwthread cut in its other end, so that the said rod may be shortened to take up the wear by turning the said nut. The inner end of the connecting-rod Y is attached to the center of a U-bar, Z, the ends of which are attached to twopbearings, A. The bearings A slide in rabbeted bars of the frame A, and are connected at their rear ends by a cross-bar, B.

To the bearings A are pivoted the journals of the small friction-Wheel C. The frictionwheel C is so placed that when drawn forward itenters the space between the friction-wheels I P and comes in contact with the faces of both of said wheels, so that the feed-shaft J will be driven in the opposite direction, and will thus gig the carriage.

The two friction-wheels'H C are so connected that either may be thrown into gear and the other out of gear by a single slight movement of the feed-lever U, thus effecting a great saving of time and allowing the machine to do much more Work than would otherwise be possible. The friction-wheels H C are formed of alternate layers of paper and rubber, as shown in Figs. 2, 3, and 4.

rlhe rubber maybe used in the form of sheets secured between sheets of the paper; or it'may IOO Iol

be applied in liquid .form to the side or sides of the sheets of epaper, as may beidesired.

With this construction the heat caused by the slip of the friction-wheel will soften the rubber, spread it over the surface of the said `wheels, and cause them to'take a firmer hold upon the faces of the wheels I P, making-the change of motion more sure and prompt.

What I claim as myinvention is- 1. In a, feed kand gig mechanism forv sawmills, the combination, with the shafts J O and the friction-pulleys I P thereon, of the vertically-moving friction-wheel H, the Ahorizontally-moving` friction-Wheel C', the rock-shalt T, having arms S V, and connections, substantially as described, between the arms S V and the Yfriction-Wheels rH C', as `and for the purpose specified.

2. In a. feed and gig mechanism for' sawmills,tho.cmbination, with the shafts.) Ofand tlle'friction-pulleys I P thereon, of the frictionwheel C,journaled in sliding bearings A', Vthe friction-wheel H, journaled in a bearin g, fl, the lever G, carrying the bearing fz, therock-shaft T, having armsS V and connection1s,substantially as described, betWeenftheiarmsS V and vthe lever G, and sliding bearings A', as and for the purpose specified.

3. In a feed and gig mechanism for sawmills, the combination, with the shafts J and O and the friction-pulleys rIPlthereon, of the horizontally-sliding bearings A', the vertically- 4moving vbearing f2, the friction-Wheels H C',

and mechanism, substantially as described, for moving the bearings Af2 alternately to and from the friction-pulleys I P, as and for the purpose specified.

4. The combination of ythe two levers U X,

lthe two arms SMV, the three connecting-rods

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