USRE11732E - Steam set-works for sawmills - Google Patents

Description

fieissued Apr. ll, IGQEL M. CURRY &. R. F. BARKER. STEAM SET WORKS FUR SAWMILLS.

Application filed H21. 13, 1889.1

4 SheeisSi1eet L.

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Reissued Apr. ll, H399.v

connv & R. F. BARKER;

SET WORKS FOR SAWIlLLS gApplieation filed In. 13, 1500 No. u,1 32.

No. 11,732. Reissued Apr. u, i899.

m. connv & R. F. BARKER.

STEAM SET WORKS FOR SAWMILLS.

Application filed In, 13, 1899.]

A Sheets-$heet 3 Reissued Apr. 'll, I899.

I; CURRY G. R. F. BARKER. STEAM SET WORKS FOB SAWIILLS.

A plication filed. In. 13, 1899.)

' gwvantom UNITED STATES PATENT- OFFICE. I

MICHAEL CORRY AND RUBEN F. BARKER, OF MARINETTlE-WVISOONSIN.

STEAM SET-WORKS FOR SAWMILLS.

SPECIFICATION forming part of Reissued Letters Patent Nb. 11,732, dated April 1 1, 1899.

Original No. 608,018, dated July 26, 1898- Application for reissue filed March'13y1899. Seria1 1l'o.708,960-

To all wlwin it may concern:

Be it known that we, MICHAEL OoRRY and RUBEN F. BARKER, citizens of the United States of America, residing at Marinette, in

the county of Marinette and State of VVisconsin, have invented certain new and useful Improvements in Steam Set-\Vorks for Sawmills; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to improvements'in hand-control steam-actuated set-works for sawmill-carriages; and the object is to provide a simple and effective device for accurately adjusting the set-works so as to cut boards of uniform thickness and of any 'desired thickness as well.

To this end the invention consists in. the construction, combination, and arrangement of the device, as will be hereinafter more fully described, and particularly pointed out in the claims.

The accompanying drawings show our inventionin the best form now known to us;

' same horizontal of the steam-cylinder.

but many changes in'the details niight be made within the skill of a good mechanic without-departing from the spirit of 'our in-" vention as set forth in ofthis specification. The same reference characters indicate the same parts of the invention. e

Figure 1 is a perspective view of our im proved set-works. taken from the opposite side. Fig. 3 is a top plan View. Fig. 4 is a central transverse section. Fig. 5 isa. horizontal section, and'Fig. 6 is a longitudinal section through one of the oil-cylinders.

1 denotes the carriage-timber, and 2 acasting formed with an integral right-angular bracket 3, which is bolted to the timber.

4 represents the steam-cylinder, and 5 5 the oil-cylinders, arranged parallel with, in the plane, and on opposite sides the claims at the end i represents the valve-chest of the steamcylinder, and it is provided with the usual form of balanced piston-valve the live and exhaust steam.-

7 denotes the valve-stem, and its outer end for controlling -guide-rods1515; I 2324 denote-a-pair'of differential pawls arm 17 by'the' retaining-bolts Fig. 2 is a similar view;

. "31; denotesia vertical is pivoted to the lower end of ad'epending arm 8,. fixed to the longitudinal shaft 9, and

10 denotes a hand-lever fixed to said shaft for conveniently manipulating the valve.

12 denotes the steam piston-rod, the outer 1 end of which is fixed to the cross-head 13, and 14 14 represent the piston-rods of the oil-cylinders, also fixed to the cross-head on opposite sides of and in the same horizontal plane with the steam piston-rod.

15 15 represent the parallel cylindricalguide-rods on whichthe cross-headrecipro- 'cates, and their inner ends are fixed in the integral web connecting the cylinders and their outer ends in the vertical lugs 16 1 6 of the inclined arm 17, formed integral'with'the bracket 2.

1s denotes a horizontal barfiix'ed at its in- 0 ner end to the front face of the cylinder-casting, and its outer end is turned downwardly and is secured to the arrn'17, and 19 denotes an'adj ustable scale seeured'to theufpper. face of. said bar, while 20 represents e age or pointer'traversing said scale, and iti's forme'd on the upper end 011a vertical arm-.21, fixed to a cross-head 22, *having 'a' reciprocating movement on the outer ends of the fixed fulcrumed to the under side of the cross-head '22, which alternately engage the teeth on the ratchet plate-alf;adjnstably secured to the I 25-an'dthead-85 justing-sorew26x v p 1 27 represents .a-yek'e extending outward from the cross-head- 22, and it is pivoted bya bolt 28 .to a" hapd-1eveix29, fulcrumedht its lower end to the strapBmpivotedjto the 31-11117 9o guide-socket formed integral with the yoke27; and 32f denotes a vertical barreciprocatin'g in said guide-socket, its lower end being turned hori'zdntallyinward to form the arm 33, which) extends through a groove 34, formed in the ratchetplate 24 and beneath the? free ends of the pawls. The upper end of thebar 32 is threaded to receive the bifurcated jaw 35, which extends on each sidelof the lever 29, and 36 rep- 10o resents a hand-grip pivoted to the upperend of the hand-lever 29, and a connecting-rod 37 extends from grip'36 to the jaw 35, so that when the grip is drawn in parallel with the 5 termined by t e gage 20, and as this crosshead 22 forms the limit-stop for the outward movement of the cross-head 13 and as the lock-nuts 38 39 on the inner ends of the guiderods limit the play of the cross-head in the opposite direction the length of stroke or travel of the head 13 can be regulated to the fraction of an inch.

40 denotes a longitudinal shaft which operates the knees, (not shown,) and 41 denotes the ratchet-wheels by means of which said shaft is intermittently rotated. A countershaft 42 is journaled in the bearings 43 in the casting 2, and it is provided with the rocking arms44, carrying the pawls 4.5, whichactuate-the ratchet-Wheels 41.

. 47 and 4 8 denotevertical arms rigidly fixed to said counter-shaft, and their upper diskshaped ends 49 extend into the grooves 50 50, formed in the opposite ends of the cross-head movement of the cross-head is communicated to the knees.

Referringto Fig. (i, 51 reprcsehtsthepiston on the rod 14, and 52 denotes a pipe ext-- 0 tending from one end ofthe oil-cylinder to theother, so that when steam is admitted to, one'end of the steam-cylinder the movement of thesteam-piston is communicated to the oil-cylinder pistons through the'medium otthe cross-head 13, the oil in the cylinder beingforeed from one end of the oil-cylinders to-theother through the connecting-pipe,and by? means of the valve 53 the passage of the oil i s; regulated so as to control the move- 4o"ment of the steam-piston and cross-head 13, the oil acting as a cushion or buffer, which.

prevents all tendency to irregular or jerking movement of the cross head, bnt, on the contrary, insures a perfectly uniform, regular, and steady movement of the knees,

The operation of the device 1s very simple and under perfect control at alltimes, one, move being all that is required to manipulate it, forwith one hand on the lever 29 one can instantly regulate the thickness of the boards and with the hand-on the lever lOone can move the logthe exact distance-required and which is predetermined by the movement of thecross-head 13.

55 Having thus'fully described our invention,

,what we claim as new and useful, and desire to secure by Letters Patent of the United States, is

upon the bed or base, a piston adapted to reciprocate in the cylinder, a cross-head sliding ing the knees. 1. In a sawmill set-works, in combination, 6o abed or base, amotor-cylinder and guide-rods parallel with the axis thereof fixedly mounted upon the guide-rods, a piston-rod connecting I the piston and crosshead, a second crosshead sliding upon the guide-rods, means for locking such second cross-head in positions to which it, may be adjusted, wherebythe range of travel of the piston may be regulated, and mechanism actuated by the firstmentioned cross head for intermittently ad vancin'g the knees. w

2. In asawmill SBii-WblkS, in combination, a bed or base, a motor-cylinder and guide-rods parallel with the axis thereof fixedly mounted upon the bed or base, a piston adapted to reciprocate iu'the cylinder, a crosshead slidin g upon the guide-rods, a piston-rod connecting the piston and cross-head, a second crosshead sliding upon the guide-rods, manuallycontrolled ratchet-and-pawl mechanism for locking such-second cross-head inpositions to which it may be adjusted, whereby the range of travelof the piston maybe regulated, and mechanism actuated by the firstmentioned cross-head for intermittently adp vancing theknees. 25 13,so that by the mechanism just described the 3. In a sawmill set-works, in combination,

abed or base, a motor-cylinder and guide-rods parallel with the axis thereof fixedly mounted updn the bed or base, a piston adaptedto reciprocate in the cylinder, a cross-head sliding upon the guide-rods, a. piston-rod. connecting. the piston and cross-head, a second crosshead sliding'upon the guide-rods, means forlocking such second cross-head in positions 'to whlch it maybe adjusted, whereby the range of travel of the piston may, be regulated, means for retarding the 'movementof the firstnnentioned cross-head, and .mechan ism actuated by the firstrmentioned cross:

head for intermittently advancing the knees.

. t. In a sawmill-setvwork's, in combination,

abedorbase, a motor-eylinderand guide-rods parallel with the axis thereof-fixedl y mounted upon the bed or base,a piston'adapted to re-.

ciprocate in the cylinder, a cross-hsqd-sliding upon the guide-rods, apiston-rod'connecting the piston and cross-head, a second crosshead sliding. upon the guide-rods, means'for locking'such second cross-head invpositions to which it may be adjusted, wherebythe.

range of travel of the pistonmaybe re'gu- -lated,retarding-cylinders, as 5, 5, pistons rcciprocating therein, and being connected with tho first-mentioned cross'hcad, each of such cylinders, 5, 5, having a by-pass connecting its chambers at opposite sides of its piston, and mechanism actuated by; the-first-meutioned'cross-head for intermittently advanc- MIOHAEL GORRY. RUBEN l3. BARKER. Witnesses: V I

E. A. LEE, M. 0. KoHLER.

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