US448593A - Flayel simonson - Google Patents

Description

(No Model.)

F. SIMONSON. LOG LIPTEB. AND TURNER.

Patented Mar. 1'7, 1891.

@WMM/@awo l with STATES ATEN muon,

FLAV EL SIMONSON, OF MILIVAUKEE, IVISCONSIN, ASSIGNOR TO GEORGE H.

` OHAMBERLAIN, OF SAME PLACE.

LOG LIFTER AND TURNER.

SPECIFICATION forming part or" Letters Patent No. 448,593, dated March 17, 1891. Application filed May 26, 1890. Renewed February 24, 1891. Serial No. 382,323. (No model.)

.To ttZZ whom it may concern:

Beit known that I, FLnvnL SIMoNsoN, a citizen of the United States of America, residing at Milwaukee, in the county of Milwau- 5 kee and State of IVisconsin, have invented a certain new and Improved Log Lifter and Turner, of which the following is a specification, reference being had therein to the accompanying drawin v 1o My invention relates to certain new and useful improvements in log lifting and turning machines ot the class in which a log is litted from the logway, pushed onto the carriage, and turned by mechanism controlled by a single lever, such a machine being shown and described in an application for Letters Patent of the United States iiled by me on the 13th day of February, 1890, and numbered 340,338. zo One object of my present invention is to provide for the operation of the hook-carrying arms independent of the operation of the push-arms, whereby a round log may be turned after it has been pushed onto the carriage and the hook may be withdrawn out of the Way of the carriage the instant the log is pushed back into position, thereby very materially increasing the operative speed ot the machine. v

Another Object of my invention is the production of a hook that will disengage itself from the log when the latter is turned.

My invention consists, first, in mounting the hook-arms loosely upon the rock-shaft and in engagement with recessed collars rigidly secured on said shaft; secondly, in a novel construction of the hook, which is provided with a horn, the purpose of which is to contact with the log when the latter has been 4o turned and cause the disengagement of the hook, and, thirdly, in providing each steamcylinder with a steanrchest and connecting` each valve-stein with a quadrant upon the rock-shaft, whereby the respective valves may be centered independently of each other.

Figure l of the drawings is a perspective view of a machine embodying my improve ments. Fig. 2 isafront elevation ot' the hool-tarms and their hub. Fig. 3 is a perspective view of one of the recessed collars. a side elevation of the hook.

Fig. fl is In the drawings, A is the mill-floor, upon which the machine is set; B, the logways, only one of which is shown; C, the rock-shaft, mounted in pillow-blocks c; and D the carriage head-blocks, only one being shown.

E E are the push-arms, keyed or otherwise rigidly secured on the rock-shaft C. On one of these arms there is formed a quadrant e, for a purpose which will be explained farther 6o on. As will be seen, the quadrant is slotted annularly, as at l, and also peripherally, as at 2. Inside of the annular slot is placed a metal block 3, as seen in Fig. 2, which is adjustably secured therein by means ot bolt et, passed through a washer 5 and provided with nut G. This quadrantis shown and described in my former application, above alluded to, as a separate casting secured on the rock-shaft.

F F are the hookarms. Instead of forming 7o these arms separate and rigidly securing them upon the rockshatt C, as I have done heretofore, I now cast them integral with a hub f, having a projecting lug 7 on each end, andintegral with the hub there is also cast a quadrant e, in all respects similar to t-he one on one of the push-arms above described. I mount this hub loosely ou the rock-shaft C between two collars G, keyed on the shaft, with the lugs on the hub lying within recesses S, cut in the 8o inner end of the collars. As will be seen in the drawings, these recesses 8 in the collars are ot' considerably greater width than the lugs 7 on the hub, and the collars are so adjusted on the shaft that when the hook-arms 8 5 are down in the position of rest the upper walls of the recesses will bear upon the upper edges of the lugs.

In the upper ends of the hook-arms F is pivoted the hook II, which when down rests 9o on ablock 71., secured between the arms. The butt ot the hook is bifurcated, and each branch is separately pivoted to its respective arm F. On each branch of the hook-butt there is formed an outwardly-projecting lug 9, which lugs ride freely over the upper rounded ends of arms F when the hook is canted forward to engage with t-he log', but contact with the backs of said arms When it is thrown up into the reaching position, there roo by preventing the hook from being tilted over backward by any sudden jar. For the purpose of causing the hook to discngage itself from the log when the latter has been turned to the desired position, I provide it with a horn 72,', iu front of and preferably in line with the hooked portion in. As will be seen in the drawings, the horn is somewhat shorter than the hooked portion and has a blunt end, which, on coming in contact with the log, will cause the hooked portion to be lifted out of engagement with the latter.

I represents the lifting-bars, pivoted at their rear ends to stands I', the forward ends of the bars resting on cams .I,kcyed on the rockshaft C.

K K are two oscillating steam-cylinders connected, respectively, with two steamchests L L bysuitable pipes 10 1l and l2 13, as seen in full and dotted lines. The pistonrod M of cylinder K is pivoted to one of the push-arms E, and the piston-rod M of cylinder K is pivoted to the hook Il at Il, eccentric to the pivotal points of the hook to its arms.

N N are the valve-stems of the engines, each of which is made in two pieces, these being connected by a right-and-left screwthreaded sleeve n, as seen in the drawings, and each stem is provided with a T -head 15, which lies horizontal in the annular slot in one of the quadrants e, the stem N connecting with the quadrant on the push-arm and the stem N connecting with the quadrant on the hub of the hook-arms.

O is a shaft located underneath the millfloor, to one end of which is pivoted the operating-lever I), which extends upward through the floor, and on the other end of this shaft there is rigidly secured a crank O', to which is pivoted one end of a rod Q, which passes up through the floor, and is pivoted at its other end to an arm R', secured on the valvestem N.

On the valve-stein X is secured another arm It, similar to the one on stem h", and to this arm is pivoted one end of a rod S, whose other end is pivoted to one arm of a bellcrank T, underneath the floor. Another rod U is pivotally connected to the other arm of this bell-crank and to the operating-lever I.

The operation of my machine is as follows: The first thing to be done is to provide for cutting off the steam. To do this I rst turn the rock-shaft C so that the quadrants c will be down and the IT-heads of the valve-stems at the forward ends of the slots l after which I center the valves by lengthening or shortening the valve-stems by means of the sleeves n. I next turn the push-arms and the hookarms up as far as it is desired to have them go, each set separately, and then adjust the quadrant-blocks 3 against the 'lV-heads of the valve-stems. Now assume that the rock-shaft C is turned so as to bring the cams, the pusharms, and the hook-arms into a horizontal position, with the hook down between its arms, and that a log rests upon the logways B and over the lifting-bars I, when, as will be evident from the foregoing description, all the valve-Lmrts will be closed. The operator (who for convenience of description is p'esumed to be facing the log) now pushes lever P to the right, which movement, in an obvious manner, opens one of the valve-ports in the steamchest L and admits steam through the pipe ll to the rear end of cylinder K, forcing` its piston and piston rod forward and rocking shaft C forward, when the cams will raise the lifting-bars and thus lift thc log clear of the logways, by which time the push-arms will bear against the log and push it onto the headblocks of the carriage, the arms continuing to swing forward for that purpose until the quadrant reaches a position to cause the valvestem to center the valve and throw lever I) back to its normal position. \Vl1ile this movement of the push-arms to place the log upon the head-blocks is going on, however, the operator pushes lever I forward, which works shaft O forward, and thus opens one of the ports in steam-chest L and admits steam through pipe 12 to the rear end of cylinder K', forcing its piston and piston-rod forward, thereby raising the hook-arms and throwing the hook up into a position to engage with the log at any desired point in its circumference, when he immediately reverses the lever to open the other port in steam-chest L and admit steam through pipe 13 to the front end of cylinder K, which results in drawing the hook down onto the log, and then, as the hook is at the same time being drawn backward, the log, resting against the lifting-bars and push-arms, will be turned to the desired position, by which time, the hook no longerhaving a hold upon the log, the hook-arms and hook will fall back to their normal positions. The operator now pushes lever P to the left, and thereby admits steam through pipe lO to the forward end of cylinder K and rocks shaft C and its attached push-arms and cams back to their normal positions of rest.

Thus far the description applies to around log; but we will now assume that a slab has been cut and it is desired to turn the log for another cut. The operator in this case first admits steam to cylinder K behind the piston, which drives its piston-rod forward and raises the hook and hook-arms, and as the lugs on the hook-arms engage with the collars on the rock-shaft the latter is turned, thereby raising the push-arms, the cams, and the lifting-bars. IIe then reverses the action of the piston in cylinder K', which draws the hook down onto the log and rearward, thus turning the log, the hook-arms meanwhile turning backward loosely on the rock-shaft, and then when the log has been turned the hook will leave it and the hook-arms and hook will drop to the position of rest. Next he admits steam to the rear end of cylinder K, rocking shaft C forward, raising the log` and pushing it back into place upon the head-blocks, and finally he rocks shaft C back into position of rest.

Having thus described my invention, what IOO IOS

IIO

- I claim as new, and desire to secure by Lotters Patent, is-

l. In a log lifting,` and turning machine of the class described, the combination, with the rock-shaft bearingrigidly-attached cams and push-arms, mechanism for rocking theshaft, and pivoted liftingbars operated by said cams, of a hook-carrier loosely mounted on the rock-shaft, stops for limiting` the movements of the hook-carrier, and mechanism for turning said carrier upon the shaft and operating the hook, substantially as described.

2. In a log lifting and turning machine of the class described, the combination, with the rocleshaft bearing rigidly-attached cams and push-arms, mechanism for rocking the shaft, and pivoted lifting-bars operated by said cams, of two recessed collars rigidly fixed on the rock-shaft, two hook-arms joined at their lower ends to a hub loosely mounted on said shaft between the collars, the hub having lugs resting in the recessed portions of the collars, a `hook pivoted between the upper ends of the hook-arms, and mechanism for turning the hook-arms upon the shaft and operating` the hook, substantiallyas described.

3. In a 10,9; lifting` and .turning` machine of the class described, the combination, with the rock-shaft and a hook-carrier mounted on said shaft, of a hook having a horn on its curved end, and mechanism for operating the hook, for the purpose set forth.

4. The combination, with the rock-shaft bearing'rigidly-attached cams and push-arms and aloosely-mounted hook-carrier, and pivoted lifting-bars operated by said cams, of two steam-cylinders, each havinga pistonrod, one pivoted to the hook and the other pivoted to one of the push-arms, a steamchest for each cylinder, provided with an adj ustable valve-stem, two quadrants upon the rock-shaft with which the Valve-stems are connected, and lever mechanism for operating the valve-slems, substantially as described.

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

FLAVEL SIMONSGN.

Witnesses:

E. QNYE, PERLEY PITKIN.

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