US279769A

US279769A - Tbeeitoey

Info

Publication number: US279769A
Authority: US
Publication date: 1883-06-19
Anticipated expiration: 1900-06-19

Description

S. KIN'NEY.

SAW SWAGE.

N0. Z79;'7.69. Patented June 19, 1883.

UNITE STATES PAT NT OFFICE.

SIMON KINNEY, OF PORT TOIVN SEND, WASHINGTON TERRITORY;

SAW-SWAGE.

SPECIFICATION formingpart of Letters Patent No. 279,769, dated June 19, 1883.

Application filed February 17. 1883. (No model.)

' Townsend, county of Jefferson, Territory of parts.

\Vashington, have invented an Improved Die for Saw-Swages; and I hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to anew and useful improvement in the class of saw-swaging 1nachines, and more especially in that certain machine secured to me bv Letters Patent dated November 19, 1878, No. 210,127, to which Letters Patent reference is hereby expressly made.

My improvement consists in a novel swaging die or block, which I construct in the man- 1] er and for the purpose hereinafter described.

Referring to the accompanying drawings, Figure 1 is a side elevation of my saw-swaging machine substantially as shown in my patent. Fig. 2 is a perspective view of the bed-plate A, and of such parts as are necessary to show the application of my die to the above-described machine. 3 is a perspective view of the die Q.

In these drawings I have reproduced the entire machine as heretofore shown, with the exception of the swage-block, wherein my improvement lies. This I have done in order that any one skilled in the art to which my invention appertains may clearly understand my improvement in connection with surrounding I shall therefore give a brief description of the niachine for the same reason.

A is 'a bed-plate, to which a cap, B, is secured. This cap has avertical arm, 0, to which is pivoted the main lever D, connectedby a lever or link, E, with the top of a lever, F, an end of which is pivoted in the bifurcated top of the bed-plate.

H is a steel plate, let into the bed-plate, and forming a c1amp-plate, against which the vertically-sliding clamp I operates to hold the sawtooth when said' clamp I is forced down by a canrarm, J, one end of which is pivoted to the arm 0 and the opposite end beveled to engage with a roller, K, 011 lever F. A set-screw, b, in the cam-arm adjusts the length of stroke of clamp I.

L is a spring to return clamp I.-

M is the anvil-bar, secured in bed-plate A and cap B, and against which the saw-tooth is to be pressed.

The center 5 5 shown in Fig. 3, its two sides being at right angles and oppositely planed or halved out at its ends in order to render it reversible in its groove. It has b'eveled or rounded swaging edges, as usual. Either side maybe presented as a die, and the other acts as a back brace or guide against the wall of the groove. The swage-die is moved back from the anvil by a spring, f.

R is the block lying between the plate H and the knuckle-block S-to permit the inter- 7o vention of packing when the die wears.

S is the knuckle-block between the block R and post F, whereby the pressure is iniparted to the die Q.

T is a bar or stop to limit the movement of 7 5 lever D.

The operation may be described thus: The depression of the lever D slightly lowers the lever F, which causes the cam-arm J to move toward the bed-plate and force the clamp Ito hold the saw on the clamp H. The roller K still holds the cam-arm, while the continued movement of the lever F acts on the knuckle S and forces down the swage-die Q to swage the tooth against the anvil M. Thus a great pressare is brought to bear, and for this reason all the parts which bear against the saw must be made of steel, and especially the swaging die or block must be .made of the finest material and be fitted accurately and securely.

to it plates on each side. These plates were necessary to serve as guides, for the single,

The swage-block which I have heretofore used consisted of a single bar having riveted straight bar could not be kept to its place with 5 accuracy under the'tremendous pressure to which it was subjected. On account of the character of the block having a single bar, the only practical construction was to rivet the guide-plates toit, as it could not be forged in [00 a single piece, nor could any cast-iron be used for the purpose. The disadvantage of this die was its tendency to swage a tooth sidewise thatis, getting one corner longerthan the other.

This was the result of the guide-plates working loose on their rivets and allowing the bar to roll or rock. The guide-plates were not strong enough to resist the pressure on the knuckle, and the block would not move straight to its work. This disadvantage I remedy by the die I have herein shown. It is of such a shape that it is practicable to make it of the required steel in a single piece. It therefore needs nothing riveted or secured to it in any manner. One side of it acts as aback or guide to steady the side which is serving as a die, and it cannot rock or roll under any circumstances. Not being'a single straight bar, it is steadied by its other arm so firmly that it moves straight to its bearing and has no tendency to swage the tooth sidewise. Being a single piece, it is strong, and has nothing to work'loose. Its single guide-arm is su'llicient, as the pressure is all on the back, and it may be for this reason made less cumbersome than the old form. It can be easilyreversed to pre sent either arm for pressure against the tooth.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

plate, A, clamps for holding thetooth, dies for swaging it, and levers, all substantially as herein described, in combination with the reversible swage die or block Q, fitted to slide in said bed-plate, said die or block being made integral, having arms at right angles, with swaging-edges, and one arm acting as a back guide and the other as the die, substantially as herein described.

In witness whereof I hereunto set my hand.

SIMON KINNEY.

\Vitnesses:

JAS. MoRLnv, J. H. BLooD.