US660575A - Saw. - Google Patents

Description

(No Model.)

D. B. JOHNSTON.

SAW.

(Application filed May 31, 1699.)

Patented DCt. 30, I900.

UNTTED STATES PATENT OE'EIcE.

DANIEL B. JOHNSTON, OF PARKERSBURG, WEST VIRGINIA.

SAW.

SPECIFICATION forming part of Letters Patent N 0. 660,575, dated October 30, 1900.

Application filed May 3], 1899. Serial No. 718,874. (No model.)

To all wit/27m it may concern:

Be it known that I, DANIEL B. JOHNSTON, a citizen of the United States, residing at Parkersburg, in the county of WVood and State of West Virginia, have invented certain new and useful Improvements in Saws; 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 invention has relation to saws, and is especially designed for that variety thereof termed a handsaw.

The object of my invention is to provide means which will enable the handle of the saw to be instantly removed from the blade and as quickly restored into operative union therewith, the advantages arising from such construction, among others, being that saws thus constructed may be more closely and snugly packed forshipment, it being unnecessary to reverse the position of each alternate saw when they are piled up together, as is now common, since the handles may be quickly removed and separately and closely packed together, while the blades will thus be brought closely together. It will also be found desirable to readily remove a broken handle from the saw and replace it with a perfect one.

A further advantage arises from the fact that a workman need not be bothered or burdened in carrying more than one handle, as a variety of blades may be provided for such handle, thus rendering the saw readily convertible from one having coarse cutting-teeth and ablade provided with fine or delicatelyformed teeth and also all the intermediate grades or varieties of teeth.

In the accompanying drawings, Figure 1 is a side view of my improved saw complete. Fig. 2 is a view of the butt-end of the blade, while Figs. 3 and 4 are detailed views of the locking device relied upon to hold the blade in operative union with the handle.

Referring in detail to the several parts of my invention, 1 is an ordinary saw-handle, which is provided in the usual manner at its forward end with a centrally-disposed slit designed to receive the butt-end 2 of the sawblade. Upon one side of the handle I secure the retaining-plate 3, which may be made ornamental or otherwise, as preferred, and is secured in position in some suitable manner, as by the screws 4, said plate being preferably countersunk, so as to be left flush with the surface of the handle. A recess is provided in the handle, under the plate 3, designed to receive the sliding bolt 5, which is mounted in the guiding-sections 6, 7, and 8, the latter being secured to the plate 3, as by the anchoring keeper-plate 9, as shown, or by some equally-effective means. Between the guiding-sections 7 and 8 I dispose upon the stem 10 of the bolt 5 a coiled spring 11, designed to act against the shoulder 12 of said bolt, and thus throw the latter normally outward, it being understood that a square aperture is provided in the sections 6 and 7, while a round aperture is provided in the section 8 for the end of the stem 10. A slotted aperture 13 is formed in the plate 3, through which the stem 14 extends into union with the bolt 5, a milled or other form of head 15 being provided upon the extended end of said stem, by means of which the bolt may be easily reciprocated.

By reference to Fig. 2 it will be seen that the butt-end of the saw is provided with a recess orkeeper16, which is designed to receive the beveled end 17 of the bolt 5, as will be hereinafter fully set forth. In order to secure the upper edge of the boltin union with the handle, I provide the transversely-disposed bolt 18, which extends through the forward and upper end of the handle into engagementwith the lower end of the obliquelydisposed recess 19, provided in the upper edge of the blade near the end thereof. Designed to cooperate with the recess 19 is the convex extension 20, formed upon the edge of the saw, the upper line of which lies parallel with the direction or plane of said recess, the purpose of which is to ride against the bottom of the central groove provided in the handle, and thus enable the recess 19 to more readily find the bolt 18 and engage therewith. In joining the handle to the blade all that is necessary to be done is to enter the upper corner of the blade in the slit provided in the handle, when the concave face 20 will cause the recess 19 to find the bolt 18, when a downward pull upon the handle will cause said bolt to be seated in the bottom of the recess and at the same time bring the end of 2 scam the bolt 5 into engagement with the recess 16, and thus insure that the handle will be reliably anchored in place. The handle may be'as readily removed by pushing upward upon the head 15, which will cause the bev- 'eled end of the bolt 5 to ride out of engagement with the keeper 16, thus permitting the handle to be raised upward and disengaged from the blade.

Believing that the construction and use of my invention have been made clearly obvious, I will dispense with further reference to the details thereof.

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

1. A saw-handle having a recess in combination with a keeper-plate, a sliding springcontrolled bolt carried by the inner side of said plate, a saw-blade having a recess designed to receive the end of said bolt, and suitable means to secure the upper edge of the blade to the handle, as set forth.

2. A saw-blade having an inclined recess 19in its upper edge and, further, having that end thereof received by the handle proper, cut away to provide the convex extension 20 and the recess 16, in combination with the handle provided with a bolt 18 adapted to cooperate With the recess 19 and further having a spring-controlled bolt 5 adapted to engage the recess 16, all combined substantially as and for the'purpose set forth.

3. In saws, ahandle having a recess,a plate adapted to cover said recess and having the guiding-sections 6, 7, and 8; a bolt 5 received by said sections; a springll designed to hold said bolt normally outward; a bolt 18 passing transversely through the handle, in combination with a saw-blade having recesses 16 and 19 and a convex section 20, whereby when said recesses are brought into engagement with said bolts 5 and 18, respectively, said convex section will guide the blade and handle into operative combination, as set forth.

at. As an improvement in saws, a detachable handle provided With a recess in its side and a keeper-plate to close the same, a sliding bolt carried by said plate and extending in said recess, in combination witha blade provided with a keeper-recess designed to cooperate With the end of said bolt, and suitable means for securing the upper edge of the blade to the handle, as specified and for the purpose set forth.

5. As an improvement in saws, the hereindescribed adjustable handle consisting of a sliding bolt carried thereby and a transversely-disposed bolt located in its upperand forward end, of a recess formed in the end of the blade near the teeth thereof and an obliquely-disposed recess formed in the upper edge of the blade, and a convex face DANIEL B. JOHNSTON.

Witnesses: I

G. A. DRENEN, MADISON BoWER.

.formed upon the end of the saw near the u'p-

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