US1374736A

US1374736A - Wood-saw

Info

Publication number: US1374736A
Application number: US367825A
Authority: US
Inventors: Hatley Bird
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-03-22
Filing date: 1920-03-22
Publication date: 1921-04-12
Anticipated expiration: 1938-04-12

Description

B. HATLEY.

WOOD SAW.

Axfvucmou man ma. 22.1920.

Patented Apr.'12,f1921.

s sauts-SHEET 1.

RNN

B.HATLEY.

WOOD SAW.

APPLICATION FILED MAR. 22| 192'0.4

Patented Api; 12, 192,1.

l 3 SHEETS-SHEET-Z.

B. HATLEY.

WOOD SAW.

APPLICATION FILED MAR.22. |920 Patented Apr. 12, 1921.

UNITED STATES :BIRD HATLEY, OF EVEBSON, WASHINGTON.

WOOD-SAW.

Specification of Letters Patent.

Patented Apr. 12, 1921.

AppIication led March 22, 1920. Serial No. 367,825.

To all 'whom 5t may concern:

Be it known that I, BIRD HATLEY, a citizen of the United States, residing at Everson, in the county of Whatcom and State of Washington, have invented certain new and useful Improvements in Vood-Saws; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to whichV it appertains to make saw, if for instance, the saw strikes a nail or the like in the wood being sawed 'and it is desired to disengage the saw from such obstruction.

The invention has for its object certain `improvements in details, going to make up the ultimate perfection of the machine as an entirety.

The accompanying drawings clearly disclose an exemplary form of the underlying principles of my invention.

Brieliy described:

Figure 1 is a view in side elevation of the machine.

Fig. 2 is a top plan view.

Fig. 3 is a view in end elevation looking at the right hand end of Fig. 1, and

Fig. 4 is a detached detail view in perspective of the mechanism for effecting the reversal of the direction of movement of the saw.

Referring now in detail to the drawings:

The operating parts of my machine are mounted upon a suitable base, herein shown as comprising

parallel bars

1, 1, andbars 2, 2 secured at one end thereof near one end of the

bars

1, 1 and disposed at an angle to the latter. All of said bars may rest upon and be secured to transversely disposed

bars

3, 3.

Disposed at one end of said

bars

1, 1 and 2, 2 is a platform 4. Adapted to be detachably connected to said platform at one end thereof is a runway comprising, as

shownxthe side members

5, 5, the stationary cross-pieces 6 and the rollers 7, the latter being suitably supported in bearings 8 on the

side members

5, 5.

The platform 4 is provided with a transversely extending slot 9 disposed directly beneath the saw 10, whereby sawdust may escape.

Secured at the other end of the

bars

1, 1 are

upright standards

11, 11, carrying at their

tops bearings

12, 12, in which is rotatably supported a shaft 13. Said shaft carrlesat one end a pulley 14,.around which may pass a belt, not shown, passing around .another pulley on a drive shaft, constituting the power shaft. Also carried by the shaft 13, toward the end thereof carrying the pulley 14, is a second pulley 15 around which, and around a second pulley 16 on a shaft 17 at the other end-0f the machine, passes a belt 18. l

The shaft 17 is rotatably supported in

bearlngs

19, 19 carried upon

blocks

20, 20, secured to

timbers

21, 21 rising from the base bars 2, 2, as shown most clearly in Fig. 1.

The saw 10 is fixed on a shaft 22 rotatably supported in a boss or bearing 23 at the lower end of a swinging bracket 24, provided at its upper end with a yoke 25 pivotally suspended upon the shaft 17.

Carried by`one end of the shaft 22 `is a pulley 26 around which," and around a pulley 27 fast on the shaft 17, is a driving belt 28. It will` thus be seenthat the movement of the pulley will be imparted through the shaft 13 to the pulley 15, thence through the belt 18 to the pulley 16, thence through the shaft 17 to the pulley 27, and thence .through the belt 28 to the pulley 26 on the shaft 22 carrying the saw 10, which latter is thereby rotated.

On the end of the shaft 13, opposite the pulley 14, is a sprocket wheel 29, meshing with a sprocket chain 30 passing around a secondsprocket wheel 31 on a shaft 32 rotatably supported in

bearings

33, 33 on vertically disposed

plates

34, 34, provided with

lateral feet

35, 35, through which, and through

timbers

36, 36 disposed upon the

bars

1, 1 and 2, 2 transversely thereof, pass securing bolts 37.

Fast on the shaft 32 is a gear wheel 38 meshing" with a pinion 39 on a shaft 40 rotatably supported in bearings carried by the

side plates

34, 34. Said pinion meshes with a second pinion 4l on a shaft 42, also rotatably supported in bearings carried Vby the side plates 34, Said pinion 4l meshes with a gear wheel 43 carried by a shaft 44 rotatably supported in bearings upon the

side plates

34, 34. Said train of gears, just described, is disposed adjacent one of the side plates 34, as shown most clearly in Fig. 2.

Rotatably supported in the

plates

34, 34, intermediate the top and bottom thereof, is a shaft 45, fast on which is a friction wheel 46 adapted to frictionally engage either one of two

friction pinions

47, 48, rotatably carried on

stub shafts

49, 49, carried by a, rocker arm 50 pivoted at its lower' 4end, as shown at 5l, on the shaft At its upper end said rocker arm is articulated, as shown at 52,. with one end of an operating member 53 extending toward the saw l0, as shown in Fig. l, so as to be within convenient reach of the operator standing near the saw.

Fast on the shaft 82 is a friction wheel 54, and fast on the shaft 44 is a similar friction wheel 55, said

friction wheels

54 and 55 being in the path of travel of the

friction pinions

47 and 48 as the same are bodily swung by means of the rocker arm 50 controlled by the operating member 53.

Fast on one end of the shaft 45 is a crank 56 pivotally secured at its end, as shown at 57, to one end of a link 58, the other end of which is pivotally'secured, as shown at 59, to a rocker bar 60, pivoted at its lower end, as shown at 6l, to one of the base bars l. At its upper end said rocker bar 60 is pivotally connected, as shown at 62, to one end of a link 63 pivotally secured, as at 64, at its other end to the swinging bracket 24 carrying the saw lO. Said bracket 24 is provided with two or more apertures 65, so that the end of the link 63 may be adjustably secured in any one of said'apertures.

Y The operating handle 53 is provided on its under surface with a plurality of notches 66, any one of which may be 'engaged with a pin 67 carried by one of the frame uprights 2l, whereby the handle may be held against movement.

Pivotally secured to the operating handle 58 between the ends thereof, as shown at 68, is one end of a link 69, pivotally secured at its other end, as shown at 70, to a brake beam or arm 7l fulcrumed intermediate its ends, as shown at 72, to one of lthe side plates 34, and carrying at its free end a brake shoe 73 adapted to be brought into frictional contact with the friction wheel 46 to stop the movement thereof when'the operating handle 53 is moved into neutral position so that the

friction wheels

47 and 48 are out of contact with the friction'wheels 5.4 and 55. To effect this braking action,

Athe operating handle 53 is disengaged from thepin 67 and is pushed so as to shift the rocker arm 50 so as to disengage the

friction pinions

47 and 48, and simultaneously the operating handle 53 is shoved downward so as to rock the brake arm 7l on its fulcrum 72 and throw the brake shoe 78 into frictional contact with the friction disk 46.

Should the saw 10 strike an obstruction, such as a nail, in the board or log being sawed, it is desirable toreverse the rectilinear path of movement of the saw, so as to disengage the same from said obstruction. bvionsly, this reversal is accomplished by tilting the rocker arm 50 on its pivot 5l, so as toshi'ft the friction pinion 47 out ofengagement with the friction disk or wheel 54, and the friction pinion 48 into engagement with the friction disk or `What I claim to be new is: l. n a wood sawing machine, the combination of a rotatable saw, and mechanism for bodily movingY the same along a curvilinear path, comprising` a rotatable crank shaft, connections between said crank shaft and said saw, a friction wheel fast on said crank shaft, a train of gearing, means for rotating said gear train, two friction disks rotating with said gear train, and two friction pinions disposed between said friction disks and being bodily shiftable to bring either one into frictional contact with the adjacent friction disk and with said friction wheel.

2. In a wood sawing machine, they combination of a rotatable saw, and mechanism for bodily moving the same along a curvilinear path, comprising a rotatable crank shaft, connections between said crank shaft and said saw, a friction wheel fast on said crank shaft, a train of gearing, means for rotating said gear train, two friction disks rotating` with said gear train, 'and two. friction pinions disposed between said friction disks Aand being bodily shiftable to bring either one into frictional contact kwith the adjacent friction disk and with said friction wheel, and means for causing said shifting of the pinions,I including-a rocker arm carrying said 'pinons 3. In a' wood sawing` machine, the combination of a rotatable saw, and mechanism for bodily moving the same along a curvilinear path, comprising a rotatable crank shaft, connections between said crank shaft and said saw, a friction wheel fast on said crank shaft, a train of gearing, means for rotating said gear train, two friction disks rotating with said gear train, and two friction pinions disposed between said friction disks andbeing bodily shiftable to bring either one into frictional contact with the adjacentfriction disk and with said friction wheel, and means for causing said shifting of the pinions, including a rocker arm car.-

rying said pinions, and an operating member pivoted to said rocker arm.

4. In a wood sawing machine, the combination of a rotatable saw, and mechanism for bodily moving the same along a curvilinear path, comprising a rotatable crank shaft, connections between said crank shaft and said saw, a friction wheel fast on said crank shaft, a train of gearing, means for rotating said gear train, two friction disks rotating with said gear train, and two friction pinions disposedbetween said friction disks and being bodily shiftable to bring either one into frictional contact with the adjacent friction disk and with said friction wheel, and means for causing said shifting of the pinions, including a rocker arm carrying said pinions, means for moving said rocker arm to shift said pinions to an intermediate position where said pinions are out of Contact with both of said friction disks, and means controlled by said rocker-armoperating means for braking said friction wheel.

5. In a wood sawing machine, the combination of a rotatable saw, and mechanism for bodily moving the same along a curvilinear path, comprising a rotatable crank shaft, connections between said crank shaft and said saw, a friction wheel fast on said crank shaft, a train of gearing, means for rotating said gear train, two friction disks rotating with said gear train, and two friction pinions disposed between said friction disks and being bodily shiftable to bring either one into frictional Contact with the adjacent friction disk and with said frietion wheel, and means for causing said shifting of the pinions, including a rocker arm carrying said pinions, an operating member pivoted to said rocker arm for throwing the same to shift said pinion to an intermediate position where saidv pinions are out of contact with both of said friction disks, and means controlled by a downward movement of said operating member for braking said friction wheel.

In testimony whereof I hereunto aiiix my signature.

BIRD HATLEY.