US997373A - Saw-guide. - Google Patents

Description

G.A.DALY.

SAW GUIDE.

APPLICATION FILED FEB. 21, 1911.

Patented July 11, 1911.

Gr. A. DALY.

SAW GUIDE. APPLICATION FILED rm. 2 1911.

Patented July 11, 1911.

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UNITED STATES PATEN'I OFFICE.

GEORGE A. DALY, OF LEAVENWORTH, WASHINGTON.

SAW-GUIDE.-

Specification of Letters Patent. Patented July 11, 1911 Application filed February 21, 1911.

Serial No. 609,972.

To all whom it may concern:

Be it known that I, GEORGE A. DALY, a citizen of the United States, residing at Leavenworth, in the county of Chelan and State of lVashington, have invented certain new and useful Improvements in Saw- Guides, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to saw guides and more particularly to guides of that character employed in connection with band saw mills, the invention having for its primary object to provide a device which is adjustable to either right or left hand mills for properly guiding or directing the saw.

Another object of the invention resides in the provision of a plurality of interchangeable guide blocks such interchangeability of the blocks increasing to a marked extent the efficiency and durability of such saw guides over those of the present construction.

The invention has for a still further object the provision of means for adjustably mounting the guide blocks and rigidly securing the same in their adjusted positions.

A further object is to provide means for reducing the wear upon the guide blocks to a mmnnum.

With these and other objects in view, the invention consists of the novel features of construction and the combination and arrangement of parts hereinafter fully described and claimed, and illustrated in the accompanying drawings, in which- Figure l is a side elevation of my improved guide showing the same applied to a band mill-frame; Fig. 2 is a top plan view; Fig. 3 is an end elevation; Fig. a is a section taken on the line 4. l of Fig. 2; Fig. 5 is a section taken on the line 55 of Fig. 4; and Fig. 6 is a detail perspective view of one of the guide blocks.

Referring in detail to the drawings 5 designates aportion of the mill-frame and 6 a section of the band saw. In the present instance this saw is illustrated as of the common double toothed edge type, but it will be obvious that my improved guide is susceptible of use in connection with various other kinds of saws and is not limited solely to the specific use illustrated in the drawing.

The guide consists of two members, the movable member 7 and the stationary member 8. This latter member is formed upon one edge of a base plate 9 which ispiv otally mounted intermediate of its ends upon the bolt 10 fixed in the mill-frame 5. The guide member 8 is integrally formed upon one of the longitudinal edges of this base plate and at each end of this member the same is provided upon its upper edge with a cut away portion 11. Upon each end of ,the other movable member 7 at the upper and lower edges thereof the ears 12 are formed which, when said members are arranged in operative position, engage over the reduced ends of the stationary member 8. A pintle 13 extends through alined openings in the ends of the members 7 and 8, said pintle being adapted for easy and quick removal tohingedly connect said members at either end thereof. The opposed faces of the guide members are longitudinally recessed as indicated at 14 to provide an opening for the band saw. Each end of the movable -member 7 is formed with an enlargement or projection 7 upon its inner face which projects between the ears 12. These enlarged ends of said member are recessed as indicated at 15 and are formed with the vertical openings 16 which receive a pivot bolt 17. A rod 18 is provided with threads upon one of its ends for engagement in a transverse threaded opening in said bolt. The other end of said rod is flattened and is disposed within the slot 19 of the bifurcated cam 20 which is formed upon the end of a lever 21; A pivot pin22 extends through said cam and through the end of the rod 18 whereby said rod is pivotally connected to the lever. Each end of the stationary member 8 is also provided with a longitudinal open ended slot 23 to receive the rod 18. The guide members are adapted to be rigidly clamped together to provide a guide for the band saw by means of the lever 21 which, after the bolt 18 has been disposed in the slot 23 is turned to engage the periphery of the cam with the face of the, stationary mem ber 8 thereby drawing the relatively movable member? into close clamping engagement upon the ends of said stationary member. Such movement is limited by the abutting faces of the vertically inclined cleats or ribs 24; formed upon the opposed faces of said guide members. By connecting the guide members and providing the clamping device above set forth, it will be readily observed that the clamping device is interchangeable in the ends of the movable-member thereby adapting the guide to either a right or a left hand mill. This is one of the important features of my invention and provides a guide which is of great convenience in practical use.

In addition to the above mentioned feature I also provide a very novel arrangement of the guide blocks whereby they may be easily and quickly adjusted, and wear thereon reduced to a minimum. To this end I provide the bars 25 which are rigidly secured to the outer faces of the guide mem' bers 7 and 8 and are longitudinally recessed in their upper edges as designated at 26. In these recesses the guide blocks 27 are arranged and project through the coinciding recesses 28 in the upper edges of the guide members, beyond the inner faces of said members as shown in Fig. 2. These guide blocks may be of wood, metal or other suitable material having a suflicient degree of hardness and are arranged at an inclination, the inner ends of said blocks being disposed in a higher plane than their outer ends. Each of the longitudinal edges of the guide blocks is recessed as shown at 29 and through these recesses the screws 30 extend, the said screws serving to rigidly secure said guide blocks in position as well as a wear plate 31 which is arranged upon the upper surfaces of said blocks. The ends of this plate are formed with ears which are countersunk in the upper edge of the guide member. By simply loosening these screws, the guide blocks may be moved inwardly or out-- wardly to decrease or increase the space be tween the abutting ends of said blocks when the guide members 7 and 8 are clamped together thus accommodating band saws of various thicknesses. These guide blocks are also interchangeable in character and when one end of the same becomes worn they may be reversed and the other ends thereof presented for contact with the sides of the saw thus equalizing the wear and greatly increasing the efficiency and serviceability of the device. The arrangement of the wear plates on the upper surfaces of the guide locks serves to prevent said blocks from being accidentally disarranged by knotty logs encountering said blocks in their movement through the mill so that said blocks will always retain their adjusted positions and properly guide the band saw in its movement.

My invention contains a third important feature in addition to those above noted which consists in the ease and quickness with which the guide device as a whole may be adjusted upon the millframe. This adjusting means embodies a threaded rod 33 which is mounted in a bearing 2% fixed upon the mill-frame. The rod 38 has threaded engagement in the stationary guide block 8 and owing to the fact that said rod is mounted at one end of the guide as shown in Fig. 2, it will be obvious that upon rotating the rod in its bearing by means of the hand wheel 35 which is fixed upon the end thereof, the base plate 9 upon which the guide members are supported will be moved upon the pivot bolt 10 so as to angularly dispose said guide members whereby the band saw will be properly directed between the same. This latter feature, however, may not under all circumstances be found desirable and in such cases the base plate 9 may be rigidly secured upon the mill-frame.

From the foregoing it is thought that the construction and manner of operation of my improved saw guide will be apparent. The

' guide members may be quickly opened to remove a splinter or other foreign matter which may accidentally get caught between the band saw and the guide blocks, without interrupting the operation of the saw. The clamping means may be very quickly actuated to open or close the guide and can also be readily located in either end thereof to adapt the device for use upon a right or a left hand mill. The manner of mounting and adjusting the guide blocks in their respective members constitutes the most important feature of the invention as it is owing to the arrangement of said blocks as above set forth that the functions of the guide may be efficiently performed through an extended period of service without requiring the renewal of the guide blocks. The device is thus rendered extremely durable and highly efficient in practical use while at the same time it may be manufac tured at small cost.

While I have shown and described the preferred construction and arrangement of the various parts, it will be understood that the device is susceptible of considerable modification without departing from the essential feature or sacrificing any of the advantages thereof.

Having thus described my invention what is claimed is:

In a saw guide, the combination with a support, of stationary and movable guide members mounted upon said support, means for hingedly connecting said members together at either of their ends, a clamping device and means for arranging the same upon either end of said member to rigidly clamp said members together.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses.

GEORGE A. DALY.

lVitnesses:

N. COLEMAN, IV. E. DEsrAIN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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