US60999A

US60999A - veazie

Info

Publication number: US60999A
Authority: US
Publication date: 1867-01-08
Anticipated expiration: 1884-01-08

Description

@uilen gisten L@einer @fired W. S. COLWELL AND F. VEAZIE. OF PITTSBURG, PENNSYLVANIA.

Letters Patent No. 60,999, dated January 8, 1867.

IMPROVEMENT IN STAVE MACHINES.

'lO ALL WHOM IT MAY CONCERN:

Be it known that we, WILLIAM S. COLWELL and F. VEAZIE, of Pittsburg, in the county of Allegheny, and State of Pennsylvania, have invented a new and useful Improvement in Stave-Sawing Machine,A and we do hereby declare the following to be a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference-marked thereon.

`Our invention consists in the use of two saws travelling in opposite directions, and in the use of a feedcarriage provided with clamping jaws for holding the timber firm, said saws, carriage, clamping ja'ws and' the other parts connected therewith being constructed, arranged, and operating in the manner hereinafter described.

To enable others slrilledin theY art to make and use our invention, we will proceed to describe its construction and operation.

In the accompanyingV drawings,vwhich form part of our specication- Figure 1 representen. top View of our improved stave-sawing machine.

Figure 2 represents a front elevation of the same.

Figure 3 represents a side view of the feed-carriage of our improved stave-sawing machine.

Figure I represents an end view of our improved stave-sawing machine.

Figure 5 represents .a side view of the rocking arm to which the saws are attached.

Figure represents a perspective view `of a part which we use for a foot-brace and journal bearing.

Figure 7 represents a perspective view of the guide we use for the guides of the clamping jaws.

Figure 8 represents the guides and supports of the clamping jaws. Y

Figure 9 represents a transverse section of the endless screw used for operating the clamping jaws e and f.

Figure 10 represents an end view of the ratchet-lever used for operating the clamping jaws g and L.

Figure 1l represents a side view of .the ratchet-lever referred to in fig. 10.-

In the drawings, in which similar letters and figures of reference refer to similar parts- A reprcsentsthe frame of the machineg-i'which framemay be made of wood or iron, or wood and iron coinbined. The manner and means of constructing the frame we leave to the judgment and skill of the mechanic. The frame A is provided with a feed-carriage, '/L, which is provided with friction-wheels, s and l0; the friction wheels s are provided with grooves, and run between two rails, x and x3. To the under side of the carriage n is attached rack m4, into which gears an endless screw, w1 -on the shaitzz, (as indicated by dotted lines in iig. The bearings of the shaft x2 are in the end of the frame A and leverl22, and so arranged that by raising said lover the endless screw will be thrown into gear with the rack xt, and by lowering the lever the endless Screw` is unshippcd from the rack x4. On the upper side of l the feed-carriage m. are placed two guides 'D and D', the form of which is clearly shown in g. 7. In these guides are placed guides and supports for the clampingjaws e, f, g, and h; the forni of these guides or supports is shown in iig. 8. They areprovided with anges, 20, for holding and guiding them properly in the guides D and D. The clamping jaws are placed'in the opening 15, (see lig. 8,) and part marked 16 is used for a bearing for shaft P, on the end of which are placed wheels, 30, which gear into the racks w of the guides D and D. The clamping jaw e is .provided with a rack, o', which gears into the endless screw t', which moves longitudinally on the shaft 11, and is rerolvcd'with the shaft by means of what is termed a feather, which is tted in a groove in the shaft, which is also fitted to a groove made in the endless screw, as shown in iig. 9. The clamping jawfis provided with an arm, J, on the end of which is a pin, 9, which is fitted in a groove, y, in the endless screw i. By thus connecting the arm J oi' the. clamping jawf and the rack o of the clampingjaw e with the endless screw i, the jaws e and f can be made to move towa'rds or recede from each other in accordance with the motion given to the endless screw i; that is to say, by turning the endless screw in one.direction the jaws will recede from each other, and by turning it in theopposite direction the jaws will move towards each other. The clamping'jaw 71. is provided with a' lever, Z, on the end of which is atongue, 8; the position and form of this tongue on the end ofthe lever are clearly shown in. iig. 10. The tongue 8 ofthe lever Z gears into the rack m on the end of the arm k of the clamping jaw g. By thus connecting the lever Zto the clamping jaw h, and gearing the tongue 8 of .'the lever Zinto the rack m on the end -of the arm c of the clamping jaw g, the jawsg and L can be moved towards or from each other by moving theflever l in the desired direction for obtaining the motion desired of the jaws. On the end of the shaft P is placed a lever, u, to which' is attached a pawl, t, which isused in"\ connection with the lever u' for revolving the wheels 30, which are permanently secured on the shaft P. i The 'paw'l tis placed inbetween the cogs of the wheel next to the lever, and by operating the lever the wheels 30 and shaft P can be revolved, vwhich will move the clamping jaws g and 7LA towards or back from the saws A andvB, in accordance with the way wheels 30 are turned.4 By this arrangement ofthe clamping jaws g and z, and the manner of movingythem towardsand from each other, and bythe-means for moving them towards the saws, timber of any sizeor form (suitable for Steves) can beY firmly held between the clamping jaws and sa-wed entirely up into staves. The shaft 17, which has .its bearings in the partsmarked 24 and'O, is-provided with pulleys, 21 and 26, and aldisk, 7, to which is secured what is termed a compound or double crank, fto which are connectedrods 5 and 6, which are attached to the lower ends of the saw .arms Tand 2*.. The sawarm 2 is permanently 'secured on the shaft 3, which has its bearings in the parts marked o. The saw arm 1 is loose, andis oscillate'd on the shaft 3. Motion is imparted to the feed-carriage'n through. themedinm .ofthe pulleys` 21 andl28 andthe belt y. From the above description, and by reference to the accompanying drawings; theskillfulrmechanic will readily understand the construction and arrangement ef the several parts :of our improved stave-sawing machine, and the relation that these parts bear to eachother. We will, therefore,:proceedvat once-to describe its operation, which is as follows: i

Having the tiniber'cut into suitable lengths *for staves, it is then placed between the clamping jaws g and h, and firmly securedby forcing the jaws against -the ends of the timbers through the medium of the lever `Z and rack m. 'lhetiniberis then brouglit'in line with saws A and 3B for making-the desired cut. The clamping jaws e and j' are then forced up against the timber through the medium of the hand-wheel R, bevelled wheels 12 and 1.3, and the-endless screw 2'; motion is then imparted to the shaft 13, which will -im'part motion to the sawsk A andWB and to pulley '21, which, through themedium of belt y', will impart motion to the shaft 2:2, which will impart motion 'to the feed-carriagen, (when the endless screw :v1 is thrown in gear with the rack :n4 onthe underk side of the carriageglwhich will feed the timber up to the saws A. and B, which will travel in opposite directions,

and cut two staves at one operation.

Having thus described the nature, construction, and operation of our improvement, what we claim as our invention, is-

1. The arrangement of the saws A and B, arms Il. and 2, shaft 3, connecting-rods 5 and 6, and crank4,

v hen said arrangementis vused forI sawing out .the concave and convex sidesoi` arstave atrone operation, as herein described.

2. The arrangement of the guides D .and D', clamps e, f, g, and z, (provided with arms J and K,) rack m, lever Z, endless screw c', andwheels 12 and 13, when said parts are arranged and operating as herein described and for the purpose set forth.

3. The arrangement of the .racks w,- wheels 30, shaft P, lever u, provided with pawl t, when said parts are used in connection withthe clamps e, f, g, and t, as herein described and for t'he purpose set forth.

l W. S. COLWELL,

F. VEAZIE.

Witnesses.: JAMES J. JOHNSTON, JAMES MeBRIDn.