US80338A

US80338A - daniels

Info

Publication number: US80338A
Authority: US
Publication date: 1868-07-28
Anticipated expiration: 1885-07-28

Description

Letters Patent N. 80,338, dated July 28, 1868,

IMPROVEMENT IN SAMS-MACHINES.

fitte rgetnle refemh tu in tigen Enters rtmt mit making sagt uf tte same. i

TO ALL WHOM IT MAY` CONCERN: l y

Be it known that I, HEIRY A.. DANIELS, of Thomaston, in the county of Litchfield, and State of Connecticut, have invented a new and improved Wood-sawing Machine; 'and I dohereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to'make and use the same, reference being had to the accompanying drawings, forming a part of this specification, in which- Eigure 1 represents a frbnt elevation of my improved wood-sawing machine.

Figure 2 is a vertical section of the same, taken on the plane of the line a: z, iig. 1.

Similar letters of reference indicate corresponding parts. i

This invention relates td certain improvements on the wood-sawing machine for which Letters Patent were granted me on the 6th day of November, 1865; and the present invention consistsv in arranging the hearings of the crank-shaft in the same slide to which the swinging saw'frame is pivoted, so that the distance betweenl the working and swinging centros lcannot be varied. 'Y g The in vention also consists in the use of a reciprocating block, which turns loose on the wristpin of the crank,andwhich slides between we-.parallel that -i'nrm parteci the swinging frame. The block takesthe place of theeccentric employed, in my former machine, and works easier than thesame. l

' A, in the drawing, representsthe supporting frame of my improved portable wood-sawing machine.

B is an up-and-.down sliding bar or plate, which works in'upright or inclined guides, so that it can b e freely lmoved up and down therein. A'

C is a horizontal shaft. The same has its bearings in a tube or hub, a, which is formed on the slide B, as is clearly shown in g; 2. On the shaft, is mounwted a flywheel, y

, E is a frame, on the lower. end of which the segmental lsaw F is secured, its upper 'end being, by means of a pin, bl pivoted Vte the slide B`, as shown. l i

In the frame E are arranged two parallel'bars, c c, between which a block, G, is held that can freely slide 'between the said-hars. The wrist-pin d, of a crank formed on the shaft C, passes through this block G, so that when rotary motion is imparted to the shai'tC, the hlock will be carried around in a circle, so as Vto-iinpart- `oscillatngim-otiou to the saw-frame E, in which frame it adjusts itself` by sliding between the bars c c".

l H is a crank-handle, secured to the shaft C, for imp arting the required motion to the same.

I is a weighted lever, for'raising the slide and its' appendages to allowa block tobe placed under the same.

The operatien is'as follows: The block or log to be sawed is placed upon th'e platfor-m e of the frame A, and is clamped byalever, Jr \The shaft is then turned, imparting oscillating motion to the saw, the weight of the slide, saw-frame," and saw causing them to gradually slide downwards as thesaw cuts into thel log.

The main objection to my aforesaid former invention is, that in the same thesaw and its frame and the slide move up and down, while the. shaft remains in its bearings in the supporting-frame, whereby the distance between the shaft and pivot of the saw-frame isuvaried as the latter moves up pr down. The operation of thesaw becomes thereby irregular, :is the'leverage is varied, while in my present machine all these defects are overcome.

Having thus described my invention, l claim as new, and desire to secure by Letters Patent- Hanging the sha-ft C, by which the sawframe E is oscllated, in the slide B, to which -said saw-frame is" pivoted, as herein described, for the purpose specified. Y

' HENRY A. DANIELS; Witnesses: V

D. S. PLUME, J. E, GRANT.