US468577A

US468577A - Adam keck

Info

Publication number: US468577A
Authority: US
Publication date: 1892-02-09
Anticipated expiration: 1909-02-09

Description

A. BECK.

SAW SET.

(No Model.)

No. 468,577. Patented Feb. 9,1892.

51mm 044% M Wow w,

k s r 3 W; @QWZ UNITED STATES PATENT OFFICE.

ADAM RECK, OF HARTFORD, \VISCONSIN, ASSIGN OR OF ONE-HALF TO GEORGE F. HALL, OF SAME PLACE.

8 AW- 3 ET $PECIFICATION forming part of Letters Patent No. 468,577, dated February 9, 1892.

Application filed september 17, 1891. $eria1No. 405,963- (No model.)

T0 on whom it may concern:

Be it known that I, ADAM REGK, a citizen of the United States, and a resident of Hartford, in the county of WVashington, and in the State of \Visconsin, have invented certain new and useful Improvements in Saw-Sets; and I do herebydeclare that the following is a full, clear, and exact description thereof.

My invention has for its object to provide a self-feed saw-set; and it consists in certain peculiarities of construction and combination of parts to be hereinafter described with reference to the accompanying drawings, and subsequently claimed.

In the drawings, Figure 1 represents a side elevation of my device, partly in longitudinal section; Fig. 2, a plan view of the same, partly in horizontal section; Fig. 3, a transverse section, certain of the parts being in elevation; Fig. 4, a detail elevation of a vertically-adj ustable gage forming part of the device; Fig. 5, a detail plan view, partly in horizontal section, of a pawl-shifting mechanism forming part of said device; and Fig. 6, a detail perspective view of certain of the parts in their relative arrangement.

Referring by letter to the drawings, A represents the base-plate of my device, and by screws 1) or other suitable means this baseplate maybe rigidly secured to a suitable support 13, as best illustrated in Fig. 1. Rising from the base-plateA is standard 0, provided with a vertical arm D, the latter having a slot 0 in the direction of its length. Engaging the slot in the standard-arm D is the screw-threaded shank d of a verticaily-adjustable stop E, the latter being held in its adjusted position by means of a set-nut e, as best illustrated in Fig. 3.

The standard 0 is provided with guides f for a vertical hammer F, the upper end of this hammer being pivotally connected to a hand-lever G, that is secured to said standard by means of a link H, the upward movement of the lever being limited by the stop E, above described.

Fitting a groove in the baseplate A to oppose the lower end of the hammer F is an anvil I, beveled on the side toward the operator and having a slotted tang g, engaged by a set screw h, that turns in said base-plate to hold the anvil in the position to which it may be adjusted to suit the depth of teeth on various saws.

Vertically adj ustableon the hammer-guides f, that form part of the standard-O, is a gage J, that has awedging fit against the lower one of said guides, and is provided with a beveled saw-opposing face 2', as best illustrated in Figs. 3 and A, the bevel of said face being approximately the same as the bevel on the anvil. As shown,the tangj of the gageJ is provided with vertical slots km, respectively, engaging screws or 0, that turn in the guides f on the standard 0, the latter screw being provided with a set-head for the purpose of holding said gage in its adjusted position.

The base-plate A is provided with vertical guides that in the present instance are shown as screws 19, and engaging these guides are the slotted or recessed ends of a plate K, longitudinally disposed on said base-plate and reciprocated on the latter by the means hereinafter described.

Pivotally arranged on the plate K midway of its ends is a lever-plate L, having a cam portion q, that works between a pair of cars 0* on said plate K, and this cam portion of the lever-plate is provided with a central vertical lug s, that is designed to come in the path of lugs t c on opposite sides of a link M, the latter being pivoted between said base-plate ears.

Retained on the lever-plate L, by means of a series of lugs thereon, is a fiat spring to, having its extremities opposed to pawls N O, that are pivoted on the plate K adjacent to saw-stops P, that rise from this latter plate, and the extremities of said lever-plate are provided with lugs a; in opposition to the spring-controlled pawls.

Pivoted to the rear side of the base-plate standard 0 are bell-cranks Q, and one arm of each of these cranks is forked to engage a stud g on the hammer F, above described. The other end of each bell-crank is provided with a hook z, and that end of the link M farthest from its pivot is notched on opposite sides to engage either one or the other of the bell-crank hooks at the will of the operator, whereby when said link and either one of the bell cranks are connected there will be a reciprocation of the plate K each time the lever G is raised and lowered. It is also to be observed that when the link M is swung on its pivot one or the other of its lugs 15 n will act against the lug s on the lever-plate L to partially rotate the latter on its pivot, whereby one of pawls N or O is drawn in and the other forced outward, it being intended that one or the other of these pawls shall engage with the teeth of the saw that is being set.

A saw to be set is placed with its teeth against the stops P on the plate K so as to have said teeth come between the hammer F and anvil I, the latter having been properly adjusted in the base-plate. The link M being connected to the proper one of the bell-cranks Q, the relative one of the pawls N O is in engagement with the saw-teeth, and each time the lever G is lift-ed there is a longitudinal movement of the plate K to cause said pawl to force the saw a certain distance in the desired direction, whereby another tooth is.

brought over the anvil to be set by the next impact of the hammer, the amount of feed given to said saw being predetermined by the adjustment of the lever-stop E, above described. When the lever is depressed to cause an impact of the hammer against the sawtooth that is now over the anvil, the plate K moves back toitsnormalposition and carries the feed-pawl therewith.

The position of the gage J in a vertical direction determines the amount of set it is possible to give each saw-tooth, and as this gage has-a wedging fit against one of the hammer-guides it is not liable to be dislodged from its adjusted position.

Certain of the teeth having been set to one side of the saw, the latter is turned end for end to have the remaining teeth set to the other side of said saw, the link M being swung on its pivot to partially rotate the lever-plate L and thus bring the proper feed-pawl into working position. The link being now connected with the boll-crank that was previously idle,- the machine is ready for work and all that the operator has to do is to keep the saw against the stops on the reciprocative plate and operate the hand-lever.

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

In a saw-set, the combination of a baseplate and standard, a vertically-adjustable saw-gage, a lever-controlled hammer loose in guides on the standard, an anvil on the baseplate in opposition i'o'the hammer, a sliding plate loose on said base-plate, saw-stops and pivoted spring controlled pawls on the sliding plate, a lever-plate pivoted to said" sliding plate and provided with lugs in opposition to the pawls, a shifting link for the lever-plate, pivotally connected to-the aforesaid sliding plate, bell-cranks pivoted to said standard and connected with said hammeigand suitable means for effecting a connection between said link and either of the bell-cranks at the will of the operator, substantially as set forth.

In testimony that I claim the foregoing I havehereunto set my hand at Hartford, in the county of Washington and State of Wisconsin, in the presence of two witnesses.

ADAM BECK.

\Vitnesses:

J. M.'LE COUNT, W. J. Lu COUNT.