US577388A

US577388A - Robert e

Info

Publication number: US577388A
Authority: US
Publication date: 1897-02-16
Anticipated expiration: 1914-02-16

Description

(No Model.)

R. E. POI1\IDBXTER.V

SAW JOINTE'R.

Patented Pebplv No. mvgaqf UNTTnn STATES PATENT Tries.

ROBERT E. POINDEXTER, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO EMMAZETTA HICKS, OF SAME PLACE.

SAVV-JOINTER.

SPECIFICATION forming part of Letters Patent No. 577,388, dated February 16, 1897. Application filed June 26, 1896. Serial No. 597,036. (No model.)

To all whom, it may concern,.-

Be it known that I, RoBERT E. POINDEXTER, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in SaW-Jointers; 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 which it appertains to make and use the same.

My present invention consists in various improvements inthe details of construction of saw-jointers of that general form shown in my Patent No. 377,328, and particularly in the form of gage-plate and arrangements for securing it to the block or frame, as will be particularly described and claimed hereinafter.

Referring to the accompanying drawings, which are made a part hereof, and on which similar letters of reference indicate similar parts, Figure l is a front side elevation of the jointer, the file being indicated by dotted lines in the position it occupies when used to dress the sides of the saw-teeth and in whole lines, with its cent-ral portion broken away, in the position it occupies when used to dress the points of the teeth; Fig. 2, a perspective view of the several parts separated to show their respective forms and constructions more clearly, and Fig. 3 a vertical section on the dotted line 3 3 in Fig. l.

In said drawings the portions marked A represent the base-block or frame, B the gage-plate, and C the clamp. Said block A is of substantially the same form as that shown in my aforementioned patent. It is formed with longitudinally-extending ledges a d and projections a2 on its front side, which serve to support the frame against the side of the saw. Near each end vertical ribs a3 are formed, in which shoulders a4 are provided at the appropriate points to support the lower edge of the Iile when in the position shown by dotted lines in Fig. l. The projections a2 afford the rest for said file when in its other position. A lug a5 is formed in the center of said block, in which is formed a vertical screwthreaded perforation for the clamping-screw. A recess or slot is also formed in the block above said lug, in which a projection on the back of the clamp is mounted, said several features being substantially of the form and arrangement shown in said Patent No. 377,328.

The gage-plate B consists of a horizontal slotted plate with a vertical slotted or bifurcated shank t, which extends at a right angle with said plate and-is mounted on a screw b', inserted in a screw-threaded perforation in the block, said shank resting closely against the surface of said block and the plate proper extending horizontally across the central portion in a suitable recess provided therefor. Two cone projections a6 are formed on the bottom of said recess, one at each end of said plate, which rests thereon. By this means said plate can be quickly and easily leveled or trued up longitudinally, as the points of the cones can be easily dressed oft` as required to secure the desired result. The plate is held true and level transversely by means of the right-angled shank Z9, the inner face of which is formed true and rests against a truefaced'portion of the block. By having the shank bifurcated or with an open-ended slot said plate may be adjusted and removed and replaced without removing the screw b', when desired.

The clamp C has a bearing-face c on its lower end and an overhanging flange c on its top, which engage the ile in its respective positions, as shown. It also has a lug ozon its rear side, Which'fits within the recess in the block A, as before described. At its lower end it is cut away somewhat on its rear side to provide for the shank of the gage-plate B, against which it fits snugly. The flange c' is provided with a central notch or aperture, through which the clamping-screw O' extends and into the screw-threaded perforation in the lug a5, said screw resting in a central depression in said clamp, and thus holding it securely in position, as well as furnishing the means for operating it.

The parts of my said jointer are assembled as follows: The gage-plate is rst put in position, resting on the cones a6, which vhave been filed down so that said plate will have a true and level seat thereon. The screw t is then insert-ed through the slot in the shank b and into its seat in the block and driven tightly against said shank, thus securing the IOO plate in position, The clamp C is then put in position, the clamping-screw C inserted in place, which still further secures said gageplate, as well as said clamp, and the tool is then ready to receive the file and be used. In use the file is placed ilatwise between the projections a2 and the lower end or bearingA face c of the clamp when it is to be used to dress the points of the teeth, and cdgewise between the shoulders a4 and the flange c' of the clamp when it is te be used to dress the sides of the teeth, the clamping-screw C be ing operated in each case to move the clamp to receive and secure said iile. To evenly dress the point-s of the raking or clearing teeth, the gageplate is brought into use, the opposite side of the bleek, which is also provided with several bcaring-points in the same plane, being placed against the side of the saw and the points of said teeth inserted in the slot in said plate and dressed, as usual.

I'Iaving thus fully described my said invention, what I claim as new, and desire to secure by Letters Patent, is-- 1. In a saw-jeinter, the combination of the block, the gage-plate formed with the bifurcated or opeirslotted shank extending at right angles therewith, which ga ge-plate is mounted in a suitable recess in said bleek on projecting points with said shank extending down inte a recess between said bleek and the file-clamp, a screw extending through said slot in said shank into said bleek for securing said gageplatc, and said saw-clamp and operating device for securing the le in either position on suitable rests formed en said bleek, all substantially as set forth.

2. In a saw-jointer, the combination of the block having a seat for the gage-plate formed therein, a cone-shaped rest er projection being formed near each end of said seat, which serve as supports for said gage-plate, said plate formed with a shank cxtendin g down at right angles with its face, which rests and is secured against a suitably-formed seat on the side of said block, and the horizontal portion of which plate rests on said cone-shaped projections under its ends, and the file-clamp, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

ROBERT E. POINDEXTER.

livitnesses:

D. K. HALL, R. NV. NEIGHBOR.