US814886A

US814886A - Undercat-saw guide.

Info

Publication number: US814886A
Application number: US24764705A
Authority: US
Inventors: Bert Conway Swaggert
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-02-28
Filing date: 1905-02-28
Publication date: 1906-03-13
Anticipated expiration: 1923-03-13

Description

B. 0. SWAGGERT.

UNDERGUT- SAW GUIDE. APPLICATION FILED FEB. 28,1905.

PATBNTED MAR. 13, 1906.

Inventor Attorneys UNITED sTA n-s PATENT OFFICE.

' BERT CONWAY SWAGGERT, OF EUREKA, CALIFORNIA.

- UNDEFiCLlT-SAW CGUIDE.

To all whom, it may concern: I I

Be it known that I, BERT CONWAY SWAG- I GE-RT, a citizen of the United States, residing better understood, the same consists in cer ta1n novel features of constructlon, as hereln after fully described and claimed.

In the accompanying drawings, part of this specification, and in which corresponding parts are denoted by like designating characters, is illustrated the preferred form of the embodiment of the invention capable of carrying the same into practical operation, it being understood that the in,

vention is not necessarily limited thereto, as various changes in the shape, proportions, and general assemblage of parts may be re- 4 sorted to without departing from the principle of the invention or sacrificing any of its advantages.

In the drawings, Figure 1 is a side elevation of the improved device applied. Fig. 2 is an enlarged erspective vlew of the 1mproved device etachedp Fig. 3 is a transg erse section, enlarged, on the line 3 3 of g The improved devicecomprises a bar 10, pointed at one end for driving into a log, as represented at 11, and with a clamp-bolt 12, passing therethrough near the outer or driving en An arm 13, provided with a longitudinal slot 14, fits over the bolt 12 and is provided with a guide-roller 15, having a plurality of spaced grooves in its rim to receive the back of the saw,'(represented at 16.)

g Mounted upon the bolt 12 between the'bar 1O and-arm 13 .are two disks 17 18, having radial interengaging serrations 19 in their adjacent faces and with spaced ribs 20 upon the outer face of the disk 17 forembracing the arm 13 and with similar spaced ribs 21 on Specification of. Letters Patent. Application filed February 28, 1905. Serial No. 247,647.

forming a 1 Patented March 13, 1906.

the outerface of the disk 18 for embracing the bar 10. The bolt 12 is provided with a wing-nut 22, bearing uponthe bar 10.

With a device thus constructed when a 1 log is to be sawed from beneath, or undercut, the bar is driven into the log adj acent to where the cut is to be made and the guide-pulley adjusted by means of the bolt 12, disks 17 18, and slotted arm 13 to bring the guide-pulley in proper position to carry the back edge of the saw and support the same while in action. As the sawing progresses the arm 13, carrying the guidepulley 15, can be easil adjusted upwardly to follow the saw, as wil be obvious.

For an ordinary-sized log the range of adjustment will be suflicient to complete the sawin by one setting of the bar 10; but larger ogs may require thebar to be reset once The device is simple in construction, can be manufactured at small expense, and is durable in construction and eflicient in action.

Having thus described the invention, what is claimed is' I A. drag-saw support and guide, consisting of an arm for driving into a log and provided with an intermediate transverse aperture, an arm having a longitudinal slot, a saw-guiding roller connected to said slotted arm'at one end, a disk having a central aperture and radial serrations on one face and spaced ribs upon the otherfacefor bearing over the edges of said slottedrarm, a disk having a central aperture and radial serrations uponone face engagin tioned isk and withspaced ribs upon the .outer'face for bearing over the edges of said log-engaging arm adjacent to the aperture therein, a bolt having a head at one end and extending through the slot in said roller-bear ing arm and the apertures in the serrated disks and the log-engaging arm, and a clampnut o erating on said bolt and bearing against said og-engaging arm.

In testimony that I my own I have hereto afiiXed my signature in the-presence of twowitnesses.

BERT CONWAY 'SWAGGERT. I Witnesses:

W. F. CLYB0RNE, F. M. KAY.

theserrations on said first-menclaim the foregoing as