US462286A

US462286A - Saw-mill-carriage offset

Info

Publication number: US462286A
Authority: US
Publication date: 1891-11-03
Anticipated expiration: 1908-11-03

Description

(No Model.) 3 Sheets'Sheet 1.

J. H. VORSTMAN & E. F. NIEDEOKEN.

' SAW MILL CARRIAGE OFFSET.

No. 462,286. Patented Nov. 5, 1891.

fiw/enibws,

KWWW (No Model.) 3 Sheets-Sheet 2.

J. H. VORSTMAN & E. P. NIEDEGKEN.

SAW MILL CARRIAGE OFFSET.

No. 462,286. Patented NOV.3, 1891.

5 7- Z Aiimi l/ a 1 V a (No Model.) 3 Sheets-Sheet 3. J. H. VORSTMAN & E. P. NIEDEOKEN.

SAW MILL CARRIAGE OFFSET.

No. 462,286. Patented Nov. 3, 1891.

STATES PATENT OFFICE.

JOHN H. YORSTMAN AND EDlVARD F. NIEDECKEN, OF MILVAUKEE, VISCONSIN.

SAW-MlL'L-CARRIAGE OFFSET.

SPECIFICATION forming part of Letters Patent No. 462,286, dated November 3, 1891.

Application filed May 9, 1891. Serial No. 892,166. (No model.)

To all whom it may concern.-

'Be it known that we, JOHN H. VoRsTMAN and EDWARD F. NIEDEGKEN, of Milwaukee, in the county of Milwaukee and State of WVisconsin, have invented certain new and useful Improvements in Saw-Mill-Carriage Offsets; and we do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it pertains to make and use the same, reference being bad to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

The object of our invention is to automatically shift the carriage-frame toward and from the saw-line when the movement of the carriage is reversed, so as to carry the log or timber out of contact with the saw in running the carriage back.

It consists of certain peculiarities in the construction and arrangement of the offsetting mechanism, and particularly of the actuating mechanism, by which the offset is automatically operatcd,as hereinafter particularly described, and pointed out in the claims.

In the accompanying drawings like letters designate the same parts in the several figures.

Figure 1 is a plan view of a saw-mill carriage, to which our improved offsetting mechanism is applied. Fig. 2 is a side elevation, on an enlarged scale, looking rearwardly from the center of the carriage, of the actuating mechanism by which the offset is operated. Fig. 3 is an axial section of the same. Fig. 4 is a partial elevation of the device viewed as seen in Fig. 2, and showing the pawl-carrier in vertical section, the hub and vertical portion thereof being removed to disclose parts of mechanism covered thereby; and Fig. 5 is an axial section of'the offsetting device employed at the opposite end of the carriage from the offsetting and actuating devices. (Shown in Figs. 2 to 4., inclusive.)

A represents the carriage-frame, B B the axles on which it is mounted, C C the carriage-wheels, and D I) the track-rails, all of the usual or any suitable form and construction. The carriage-wheels C G on one side at least of the carriage are preferably grooved or flanged, as shown, to engage with a V- shaped rail D, or a rail of suitable construction to guide the carriage and to restrain the truck-wheels and axles from lateral movement with reference to the travel of the carriage. The carriage-frame A is allowed a limited sidewise or lateral movement upon its supporting-axles B B, sufficient to carry the log or timber away from and clear of the saw in running the carriage back.

E E are brackets attached to the inside of the rear side rail of the carriage-frame A, one at or near each end of the carriage directly over axles B B. F F are arms loosely mounted upon the axles B B adjacent to said brackets, and provided at their outwardly-extending ends with shifting-rollers f f, which engage with laterally-inclined grooves e e in said brackets, said grooves being forined vertically in the arc of a circle concentric with the axles B B, 011 which said arms F F are mounted. These arms F F are formed below the axles with extensionsf f, which are connected by a rod N, so that the movement of one will produce a like and simultaneous movement of the other.

Between the arm F and the adjacent bracket E a ratchet-wheel G is keyed upon the carriage-axle, and in the upper chambered portion of said arm, which serves as a pawl-carrier, are pivoted on pins f f extending through the same, pawls H H, arranged to act in opposite directions with said ratchet-wheel. They are formed with arms h 71 projecting at the back side of the ratchet-wheel toward the axle on which it is mounted and arranged to engage with stops 6 6', (shown in Figs. a and 4,) formed with or attached to bracket E in proper positions to throw said pawls out of engagement with the ratchet-wheel at the desired points in the movement of the pawlcarrier.

Between the ratchet-wheel Gand the pawlcarrier F the friction-disk K is loosely mounted upon the h ub of said ratchet-wheel, as clearly shown in Figs. 2, 3, and 4. It is provided on one side with pins 7; 7.1, which project through arc-shaped slots f f in the pawl-carrier, and spiral springs 71; it, placed around said pins in sockets formed for their reception in the pawl-carrier to force the disk K snugly against the adjacent face of said ratchet-wheel G, or an interposed washer I, of any suitable material, affording a suitable friction and wearing surface. The disk K is formed on the upper edge with projections 7& k which are arranged to engage with lugs 77/ h, projecting from the sides of pawls H H, and carry and hold the latter out of engagement with the ratchet-wheel, as hereinafter explained. The pawl-carrying arm F is held laterally in place upon the axle B between and by the ratchet-wheel G and the collar L, fixed upon said shaft, as shown in Fig. 3, and the corresponding arm F at the opposite end of the carriage is held in place between and by a similar collar L and a collar M, fixed upon the carriage-axle in a position corresponding with the position of the ratchetwheel.

We do not wish to be understood as limiting ourselves to the employment of the particular form of offsetting mechanism herein shown and described, inasmuch as the actuating mechanism, by which the offset is shifted automatically when the movement of the carriage is reversed, may be applied to various forms of offsetting devices.

Our improved device operates as follows: When the carriage is started forward. in the direction indicated by the arrow in Fig. 1, the ratchet-wheel G, engaging with the front pawl H, swings the pawlcarrier F, and, through the connecting-rod N, the corresponding arm F at the opposite end of the carriage to the left,-as shown in Fig. 2, thereby moving the shifting-rollers ff into the corresponding ends of the inclined slots e e in brackets E E and carrying the frame A for- V w ard toward the saw-line, (indicated at 1 1,

Fig. 1.) As the friction-rollers approach the ends of the slots in brackets E E,'as above mentioned, the arm h on the forward pawl H engages with the adjacent stop e, as inclicated by dotted lines in Fig. 2, and thereby throws said pawl out of engagement with said ratchet-wheel, arresting the further movement of the arms F F in that direction. The ratchet-wheel acting upon the friction-disk K causes it to turn in the same direction, carrying the rearward projection 70 under the lug h on the rearward pawl H, and lifting and holding the same out of engagement with said ratchet-wheel, thereby preventing the noise and wear of its dragging over the teeth of said ratchet-wheel. reach the ends of the slots f the further advance movement of said disk is arrested, while the rearward projection 7,5 is still in engagement with the lug h of the rearward pawl. The ratchet-wheel now slips on the disk K or the interposed washer I, which has come to rest. he carriage-frame is held in working position toward the saw-line during its advance; but when its movement is reversed theratchet-wheel G turns the friction dislLK in the opposite direction, first moving the rearward projection k out of engagement with the lug h on the rearward pawl H, al-

XVhen the pins 70- lowing the latter to drop into engagement with said ratchet-wheel. The ratchet-wheel now acting through the rearward pawl turns the arms F and F to the right, as shown in Figs. 2 and 4, untilthe arm h on the rearward pawl strikes the rearward stop 6', thus throwing said pawl out of engagement with the ratchet-wheel. At the same time the forward projection 70 is carried underneath the lug h on the forward pawl H, lifting it out of engagement with said ratchet-wheel, in the manner above explained. The pins It on the friction-disk, striking the opposite ends of the slots f in the arm F, arrest the further movement of said disk, while the forward projection 70 thereon is still underneath and in engagement with the lug on the forward pawl, and the ratchet-wheel during the further return movement of the carriage slips on said friction-disk or the interposed washer I. As the carriage returns to the starting-point and its movement is reversed the operation of the offsetting and offset-actuating mechanism hereinbefore explained is repeated, and the carriage-frame A is shifted toward or from the saw-line whenever and at whatever points in its travel the movement of the carriage is reversed.

Various changes may be made in the details of construction and arrangement of the parts, of which our improved offset is composed within theintended scope of our invention-as, for instance, a single double-acting pawl may be substituted for two separate pawls to accomplish the same results, and the stops both for the pawl-carrier and for the friction-disk may be variously constructed without affecting the mode of operation of the offset. 1

We claim- 1. The combination, with the carriage-frame and its supporting wheels and axles, said frame being movable transversely to the di- IIO rection of its travel, of aratchet-wheel mounted uponone of said axles, a vibrating pawlcarrier provided with a pawl adapted to en gage with said ratchet-wheel, suitable offsetting mechanism connected with said pawlcarrier and with the carriage-frame and adapted to shift the latter transversely to the saw line, and a stop adapted to engage with said pawl and throw the same out of engagement with the ratchet-wheel at the desired point, substantially as and for the purposes set forth.

2. The combination, with the carriage wheels and axles and frame laterally movable with reference to the direction of its travel, of a ratchet-wheel mounted upon'one of said axles, a pawl-carrier movable in the direction of the travel of the carriage and provided with pawls adapted to work with said ratchet-wheel, suitable offsetting mechanism connected with said pawl-carrier and the carriage-frame and arranged to shift the latter transversely to the saw-line when the movement of the carriage is reversed, and stops arranged to disengage the pawls from said ratchet-wheel and to arrest the movement of the pawlcarrier at the proper points, substantially as and for the purposes set forth.

The combination, with the carriage-frame and its supporting wheels and axles, said frame being movable laterally upon said axles, of a ratchet-wheel mounted upon one of said axles,a pawl-carrierloosely mounted upon said axle and provided with pawls adapted to engage with and work in opposite directions with said ratchet-wheel, offsetting mechanism connected with said pawl-carrierand the carriageframe and adapted to automatically shift the latter toward and from the saw-line when the movement of the carriage is reversed, and stops arranged to disengage the actuatingpawl from said ratchet-wheel, and thereby arrest the movement of the pawl-carrier at the desired points, substantially as and for the purposes set forth.

4. The combination,with the carriage-frame and its supporting wheels and axles, said frame being movable transversely to the direction of its travel, of a ratchet-wheel mounted upon one of said axles, a vibrating pawl-carrier loosely mounted upon said axle and provided with pawls arranged to act in opposite directions with said ratchet-wl'ieel, springs holding said pawls normally in engagement with said ratchet-wheel, stops arranged to engage with projections on said pawls and to throw the lat ter out of engagement with the ratchet-wheel and arrest the movement of the pawl-carrier in either direction at the proper points, and suitable offset ting mechanism connected with said pawlcarrier and with the carriageframe, so as to automatically shift the latter toward and from the saw-linewhen the movement of the carriage is reversed, substantially as and for the purposes set forth.

5. The combination,with the carriage-frame and its supporting wheels and axles, said frame being movable transversely to the saw-line, of a ratchet-wheel mounted upon one of said axles, a vibrating pawl-carrier provided with a pawl adapted to work with said ratchetwheel and having a projection engaging with an inclined groove or slot on the carriageframe, and stops arranged to disengage said pawl from the ratchet-wheel and to arrest the movement of the pawl-carrier in either direction at the desired points, substantially as and for the purposes set forth.

(3. The con1bination,with the carriageframe and its supportinwheels and axles, said frame being movable transversely to the direction of its travel, of a ratchet-wheel mounted upon one of said axles, a vibrating pawl -carrier loosely mounted upon said axle and provided with one or more pawls adapted to act in opposite directions with said ratchet-wheel, a friction-disk interposed between said pawlcarrier and ratchet-wheel and having pro jections adapted to engage with said pawls and hold the same out of engagement with the ratchet-wheel, stops arranged to disengage the actuating-pawl from said ratchetwheel and to arrest the movement of the pawlcarrier in either direction at the desired points, and offsetting mechanism connected with said pawl-carrier and with the carriage-frame, so as to automatically shift the latter when the movement of the carriage is reversed, substantially as and for the purposes set forth.

7. The combination,withthe carriage-frame and its supporting wheelsand axles, said frame being movable transversely to the direction of its travel, of a ratchet-wheel mounted on one of the axles, a pawl-carrier provided with one or more pawls adapted to work with said ratchet-wheel in opposite directions, a friction-disk movable a limited distance independently of the pawl-carrier and having projections adapted to engage and hold either pawl out of engagement with said ratchetwheel, and stops arranged to limit the movement of the pawl-carrier in either direction at the proper points, substantially as and for the purposes set forth.

8. The eombinationavith the carriage-frame and its supporting wheels and axles, said frame being movable transversely to the direction of its travel,-of a ratchet-wheel mounted upon one of said axles, avibrating pawl-carrier loosely mounted upon said axle and provided with pawls adapted to act in opposite directions with said ratchet-wheel, stops arranged to disengage said pawls from said ratchet-wheel and to arrest the movement of the pawl-carrier in either direction at the desired points, a friction-disk interposed between said ratchet-wl1eel and pawl-carrier and provided with a pin projecting into a slot in said pawl-carrier and with projections on its periphery adapted to engage with said pawls and to move and hold the same out of engagement with the ratchet-wheel, a spring interposed between said disk and the pawlcarrier and tending to hold said disk in contact with the ratchet-wheel, and suitable off- IIO setting mechanism connected with said pawlcarrier and with the carriage-frame, so as to shift the latter toward and from the saw-line when the movement of the carriage is reversed, substantially as and for the purposes set forth.

9. The combination,with the carriage-frame and its supporting wheels and axles, said frame being movable transversely to the direction of its travel, of a ratchet-wheel mounted upon one of said axles, a pawl-carrier loosely mounted upon said axle and provided with pawls adapted to act in opposite directions with said ratchet-wheel, stops arranged to disengage said pawls from said ratchet-wheel and to arrest the movement of said pawl-carrier in either direction at the desired points, and a vibrating arm mounted upon an axle at or near the opposite end of the carriage and connected with said pawl-carrier, said arm and pawl-carrier having projections engaging with inclined slots or grooves on the carriage-frame, so as to shift the same toward or from the saw-line when said arm and pawlcarrier are swung in either direction by the ratchet-wheel, substantially as, and for the purposes set forth.

10. The combination, With the carriagefrarne and its supporting wheels and axles,-

the idle pawl out of'engageinent with the ratchet-Wheel, and suitable offsetting mechanism connected with said pawl-carrier and with the carriage-frame, so as to shift the latter toward and from the saw-line when the movement of the carriage is reversed, substantially as and for the purposes set forth.

In testimony that We claim the foregoing as our own We affix our signatures in presence of two witnesses.

JNO. H. VORSTMAN. EDvV. F. NIEDEOKEN. Witnesses:

CHAS. L. Goss, E. G. ASMUS.