US846663A

US846663A - Chain-saw.

Info

Publication number: US846663A
Authority: US
Inventors: Albert M Granbery
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-06-21
Filing date: 1906-06-21
Publication date: 1907-03-12
Anticipated expiration: 1924-03-12

Description

PATENTED MAR. 1,2, 1907.

A. M. GRANBERY.

CHAIN SAW. APPLIOATION FILED JUNE 21,1906.

L s Ww n. QQ /m W Hh bm. www f N N Nb, Qn. mw M M m mm n A NN 1 A |v l l ll lll f .9.-- -1- .f QW ma. +I mamme o lll .l|\l ll lk o o e 1.? i Al l Q @www NQ @W NH m w nu m Nub.. QINIMI. m. w ,m. m w if Z/ M f, W j@ l different lengths for spokes, staves,

Collierville,

UNITED NsTATEs PATENT OFFICE.

ALBERT M. GRANBERY, OF COLLIERVILLE, TENNESSEE.

CHAIN-SAW.

Specification of Letters Patent.

ratented March 12, 1907.

Application filed June 21,1906. Serial No. 322.753-

.To all whom, it may concern.Y

Be it known that I, ALBERT M. GRANBERY, a citizen of the United States, residing at in the county of Shelby and State of Tennessee, have invented a new and useful Chain-Saw, of which the following is a specification.

This invention relates to a sawing machine or mill of that type4 in which a chain saw is employed and is adapted to cut wood into kinda-ng, and the like 1n a uick and easy manner.

The inventionhas for one of its objects to provided a device of this character that is` capable of being, manually or power driven and'is` of simple, inexpensive, `and compact construction, so as to be easily operated and transported from place to place. e

. A further object of the invention is the employment of a simple and improved mechanism for driving the saw, while permitting at the same time the latter to be fed.

Another object of the invention is to rovide guiding and driving .eans for the c lain saw, including devices wher by the tension of the saw may be adjusted. With these objectsin view and others, as

' will appear as the nature of the invention is better understood, the invention comprises the various novel features of construction and arrangement of parts, which are herein-l after more fully described, and set forth with "particularity in the appended claims.

In, the accom anymg drawing, which illustrates one em odiment of the invention, Figure 1 is a front elevation of the machine with portions broken away. Fig.` 2 is a side elevationviewed from the right in Fig. 1. Fig. 3 is a `horizontal section on line 3 3 of Fig. 1.` Figs. 4 to 6, inclusive, are detail views, drawn Qn an enlarged scale, of various forms of the saw-links. Fig. 7 is a section showing the joint between two links.

lCorresponding parts in `the several figures are indicated throughout by similar characters of reference.

Referring to the drawing, A represents the main supporting-frame of the machine, comprising a base-plate 1, two spaced and para lel u rights 3, and a top or cross bar 4. At one si e of the frame and at the upper end thereof is a' supplemental frame SB composed of an upright 5, bolted to the adjacent standard 3 at its lower end and spaced apart therefrom by a spacer 6. The upper end ofthe upright 5 is secured to the end of the crossbar 4, which is extended beyond the standard 13, to which the upright 5 is attached. Mounted adjacent the upper end of the frame A is a horizontal driving-shaft-7, mounted in laterally-extending bearings 8, arranged on the standards 3 and upright 5. At one end the driving-shaft 7 is extended beyond the frame A and has keyed thereto a ily-wheel 9. The driving-shaft may be driven in any suitable manner, as by a motor or by hand. For'the latter urpose a crank-shaft 10, that is mounted in n) tal frame, is employed, the same being connected with the driving-shaft by a powermultiplying gearing comprising a gear-wheel 12 on the crank-shaft and a pinion 13 on the earings 11 on the supplemenmain driving-shaft 7. The shaft 10 is rowheel, 20 an guide sheave or w eel 21 for the chain saw 22. The shaft 18 of the driving-wheel 20 is mounted at its ends in sliding blocks 23, that are guided in vertical ways 24, formed by Z-shaped angle-irons arranged along the sides of the standards 3 of the main frame. By this means the saw-carrying frame is guided vertically on the supporting- `frame A. In order to move the saw-carrying frame vertically, a per endicular rack 26 is employed, which is gui ed in an opening (indicated at 27, Fig. 2) in the cross-bar 4. The lower end of the rack is forked and mounted `on the shaft 18, whereby the rack is adapted to move with the frame C. Between the upper end of the rack and the frame C is a diagonal brace 28 ,which assists in supporting the weight of the `saw-carrying frame. Mounted in bearings 29 on the top bar 4 is a rotary shaft 30, having a pinion 31 meshing with the rack-bar 26 and a crank 32, whereby the shaft is rotated. By Vthis means the saw`- carrying frame can be raised or lowered, so as to` adjust the saw to a log being cut up and also to feed the saw during the sawing operal tion.

lOO

To feed the saw and drive the same simultaneously, a sprocket is provided on the shaft 18 at one side of the bifurcation of the leg'16,

as indicated at 33, Fig. 2, that meshes with a` l with the chain. It will thus ,be seen that the chain-saw will -be driven by rotating the crank 14, irrespective of the height of the saw-carrying frame C. By reference to Fig. 2 it will be noted that the driving and feeding

cranks

14 and 32 are located, preferably, on the same side of the main frame andat a convenient height, so that they can be operated simultaneously by the operator.

The chain saw is actuated by a positive drivingmeans, so that slip of the saw is im-v possible. For this purpose each link of the saw, or links at suitable intervals, are provided with slots 3.8, that are adapted to be engaged by ins or other devices 39 on the driving-whee 20, that act as teeth for imparting movement to the chain saw. The wheels 20 and 21 are peripherally grooved to a substantial depth, so as to receive the saw edgewise and maintain the latter in a vertical plane. They also insure the saw'from slipping of. The tension on the saw is controlled by means of set-screws 40, eachv arranged in one of the bifurcations of the righthand leg 16 of the saw-carrying frame C Each bifurcation is provided with parallel horizontally-extending jaws 41, between which is arranged a sliding block 42, in which the shaft 19 is mounted. Bymeans 'of the set-screws 40 these blocks 42 can be moved to -the right or left, and thereby adjust the tension on the saw. The links of the saw, as

shown in Fig. 7, are arranged with their ends v overlapping, the overlappin portion being halved or shouldered, as indicated at 43, so that the thickness at the joint of the links Willbe no reaterthan thebodyportion. Adjacent lin s are connected by countersunk rivets 44. In orderto prevent the lower half of the chain saw from sagging or buckling upwardly incident to the feed ofthe saw, several different means may be em loyed, which maintain the saw straight whi e passing through the wood, but permit it to read# ily plass around the wheels 20 and 21. Thus, as s own in Fig. 4, the overlapping end of one link may be provided with a segmental slot 45, in which Works a pin rigidly secured to' the overlapping portion of the adjacent link.

When the pm 1s at the bottom ofthe segmental slot, as shown in Fig. 4, the vsaw 'is prevented from buckling upwardly; but by rea son of the slot the band can readily pass around the wheels. The in 46 may be in the form of a rivet that is rlveted in place, or it can be a lug 47, struck up at right an les from lthe link, as shown in Fig. 5. A urt er alternative form is shown in Fig. 6, the same com rising interlocking shoulders 48 on the over apping ortions of adjacent links, the links .being esignated by 49 in the several iigures.

The legs 16 of the saw-carrying frame are spaced at a suitable distance apart, so as to embrace a log of substantial dimensions, and the member 15 is arched, so as to provide sufficient ,clearance as well as to brace or strengthen the inverted-U-shaped structure. A log, as indicated at 50, is placed under the frame C, with its length substantially parallel with the plane of the main frame A, and the machine and log are held in fixed relations by means of one or more dogs 51, pivoted to the standard 3 at 52 and rovided with spurs 53, that are adapted to e driven into the surface of the log, as shown. Fig. l illustrates the machine in operation, the

cranks

14 and 32 being turned in the directions indicated by the arrow, so as to cause, through the intervening mechanisms, the chain saw 22 to move in the direction indicated by the arrows adjacent thereto and the saw-carrying frame to move downwardly.

The chain saw maybe provided with teeth of any desired character. By preference, how

drag or cleaning-tooth 55, as clearly shown in Figs. 4 to 6. y

From the foregoing description, taken in connection with the accompanying drawing, the advantages of the construction and ofthe operation of the invention will be readily understood by those-skilled in the art to rwhich it appertains, and it will be readil lseen that logs of different diameters may e quickly and easily sawed.

I have described the principle of operation ofthe invention, together with the'apparatus which I now consider to be the best embodiment thereof; but I. desire to have it understood that the a paratu's shown is merely illustrative, and t at various chan es may be made when desired as are within t e scope of the invention. I

What is claimed is- 1. The combination of a main frame comprising spaced uprights, g'uideways on the uprights, a saw-carrying frame extending outwardly from between the uprights, a saw-actuating shaft mounted on the latter frame, means on the shaft engaging in the 'guideways, a rack guided on the mam frame ICO saw-carrying frame and rack to support the outer end of the former.

2. The combination otv a main frame comprising a air of uprights, angle-irons on the uprights or formin guideways, a saw-carrying frame arrange at righty angles to the main frame with 1ts outer end suspended free, a shaft on the saw-carryin frame for actuating the saw, bearing-bloc s for the ends of the shaft engagin(r in the guideways, a verti` cally-disposed rac having its lower end connected with the said shaft2 means on the u per end of the main frame guiding the racli, and a bracing member betweenl the upper end of the rack and the outer portion of the saw-4 wardly at right angles to the plane inc uding the uprights, a driving-shaft on the main frame disposed with its axis at right angles to the plane of the'saw-carrying frame, a sawdrivlng shaft onthe second frame disposed parallel with"` the said driving-shaft, a sprocket-andchain mechanism o n the main frame actuated -by the driving-shaft, means for guiding the ,saw-carrying frame along the guideways, a sprocket on the saw-drlvin shaft permanentlymeshing with the chain o the said'mechani'sm, and means for feeding the 4saw-carrying frame.

4'. The combination of a main frame comprising upri hts spacedapart and connected at their en( s, a driving-shaft adjacent the Aupper end of the frame,y a crankshaft ar ranged at one side of the frame for actuating the ldriving-shaft, a shaft at'y the base of thc frame, sprockets on the shafts at points intermediate the uprights, a sprocket-chain extending from one s rocket to the other and arranged with one alf extending vertically, guides on the upri hts disposed arallel with the said half of -t e sprocketc ain, an invertedf'U-shaped structure having its lower ends bifurcated, ,grooved Wheels arranged between the `bifurcations of the said structure, a chain saw `extending around the wheels, a sawdri ving shaft journaled on one of thelbifurcated ends oi' the structure and bloc on the saw-driving shaft engaging in the guideways of the main frame, a rack connected with the said structure, a pinion meshing therewith, and a crank-shaft for actuating thev pinion supported on the upper end of the mam frame and having its crank carrigng' one of the grooved wheels, bearingon the same side of the latter as the crank for the driving-shaft.

5. The combination of a main frame comprising a base, spaced uprights mounted thereon, and a cross-piece mounted on the luprights, with a Vsaw-carrying frame eX- tending outwardly from, between theu rights, a sawfactuating shaft mounted Qn t e latter frame, metal strips of angular crosssection arranged on tne uprights and coperating therewith lto formguideways, blocks on the ends of the shaft movable in the'guideways, a rack guided on-the main frame and connected with the saw-carrying frame,

means on the cross-piece for actuating the rack, and a bracing member connecting the saw-carrying frame andrack to support the outer end of the former.

6. The combination of a main frame, a t

horizontal driving-shaft mounted thereon, a {1y-wheel on the shaft, a power-multiplgfing gearing for transmitting motion to the riving-shaft, asprocket-and-chain device on the rame actuated by the driving-shaft, vertical guides on the frame, a saw-carrying frame movable on the main frame, a wheel on the saw-carrying frame for driving the saw, a shaft for the latter wheel, bearing-blocks on the ends of the shaftengaging in the guides, a sprocket' connected with the wheel and arranged to be permanentlyl 'in mesh with the chain of said device, and means for raising and lowering the saw-carrying frame.

7. The combination of anu rightrectangular frame, a vertical] -movable saw-carrying frame extending om one side of the main frame and movable on the latter, a rack attached to the lowerfportion of the saw-carrying.frame and guided on the main frame, a bracing member connected with the rack at its upper portionandwith the outer portion of the saw-carrying'frame1 a crankshaft mounted at the upper end of the main frame, a pinion on lthe vcrank-shaft meshing with the rack, a driving-,shaft below the crank-shaft, a sprocket-and-chain mechanism on the mainframe arranged to receive motion from the driving-shaft, and means on the saw-carrying frame for receiving motion from the 'said fmechanism and imparting it to thesaw. f v

In testimony that .I claim the foregoing as my own I have hereto a'fxedmy signature in the presenceof two witnesses;

v ALBERT M. GRANBERY Witnesses: i

J. F. Hons'ion,l J. M. Fanjrmj