US2411028A - Saw handle - Google Patents

Description

Nov. l2, 1946. A. DAvlEsl ETAL SAW HANDLE Filed Nov. 17, 1943 an ,pdv 1:86' INVENTORS Elmer Smiz,

ATTORNEYS Patented Nov. 12,1946

SAWy HANDLE Aaron Davies and Elmer Smith, Bakel', Orcg.;

Davies, deceased Grace Davies administratrix of said Aaron Application November 17, 1943, Serial No. 510,688

2 Claims.

Our invention relates tocrosscut saws, and has among its o-bjects and advantages the provision of an improved detachable handle embodying novel means whereby the handle may be easily and quickly attached to or detached from the saw, with the construction such that the change may be made with mittened hands.

In the accompanying drawing:

Figure 1 is a face view of one end of a conventional crosscut saw illustrating the handle applied thereto. Y

Figure 2 is an enlarged sectional View along the line 2-2 of Figure l.

Figure 3 is a sectional detail View illustrating the condition of the handle latch preparatory to connection of the handle with the saw, and

Figure 4 is an enlarged sectional View of the structure of Figure 2 but rotated ninety degrees.

In the embodiment of the invention selected for illustration, the crosscut saw I is provided with an opening I2 adjacent each end thereof. This is conventional construction.

2 48, and a compression spring 'l0 is interposed between the ball 64 and the plug 68. This body is provided with air and moisture vents 12.

In operation, the spring I0 normally holds the latch pin 54 in the position of Figure 3 when the handle is detached from the saw. At this time, the pin 54 is restrained from outward movemen-t beyond the position shown, with the ball The handle I4 comprises a handle bar I6 adapted to be clamped between two curved bodies I8 and 2B. Both bodies are provided with aligned openings 22 for the reception of a shaft 24 having threads 25 for coaction with a wing nut 23 lying against the body I8. The shaft nts loosely in the openings 22 as well as in an opening through the handle bar I6. This handl bar may comprise hard wood.

A saw engaging member 32 is provided with a groove 34 toI receive the end margin of the saw blade I. This member is provided with a centering projection 36 receivable in a recess or socket 38 in the body 20, Lugs 40 are formed on the member 32 for reception in a groove 42 in the body 20 to restrain the body from rotation about the axis of the shaft 24.

An opening 44 is provided in the member 32 for loosely receiving the shaft 24, and this shaft is provided with a slot 46 in which the saw blade I0 is loosely receivable.

To the end of the shaft 24 adjacent the saw blade I0 are connected two laterally projecting bodies 48 and 50. The body 50 is provided with a bore 52 for slida-bly receiving ailatoh pin 54 having a shoulder 56 engageable with the annular flange 58 at the outer end of the body 5I), but the pin end 6i) of the latch pin 54 is freely slidable in the ange 58.

A bore 62 is provided in the body 48 for guiding a ball B4 engageable with the tapered end 66 of the latch pin 54. A plug 68 is threaded into the otherwise open outer end of the body 64 projecting partly across the slot 46. However, the tapered end 6B lies to one side of the slot 46 so that the end of the saw blade Il) may be inserted in the slot and pressed therein against the tensioned ball. As the bal1 64 is brought into the opening I2 in the Saw blade I0, the latch pin 54 is correctly aligned with the opening I2 so that the latch pin may be pressed through the opening to the position of Figure 2. The wing nurl 28 is then tightened which clamps the handle bar Iii firmly between the bodies I8 and 20 and at the same time causes the member 32 to be clamped firmly against the end of the saw blade. In addition, the latch pin 54 is clamped firmly against the wall area 'of the opening I2 so as to be restrained from relative movement, notwithstanding the tension of the spring 153. Thus the latch pin 54 will be firmly secured in the position of Figure 2.

When the handle structure I4 is to be detached from the saw blade I8, slight unloosening of the wing nut 28 permits the spring 10 to project the ball 64 and the latch pin 54 to the positions of Figure 3, at which time the saw blade may be easily withdrawn from the slot 46.

Without further elaboration, the foregoing will so fully explain our invention, that others may, by applying current knowledge, readily adapt the same for use under various conditions of service.

We claim:

1. In combination with a crosscut saw blade having an opening adjacent one end thereof, a handle structure comprising a shaft having a slot to receive the end of the saw blade, a hand grip having an opening loosely receiving said shaft, rst and second bodies bored to loosely receive said shaft and positioned on opposite sides of said hand grip, said first body having means engaging the end of the saw blade, said 3 normally position said end adjacent one side of the slot with the ball projecting partly through the slot to be engaged by the saw blade and fall into the opening therein to align the latch pin with said opening, said latch pin being projectable through the opening against the tension of said spring and being frictionally held to the saw blade to resist retraction by said spring, by a nut threadably connected with the shaft adapted to engage said second bod1 to clamp the hand grip between the rst and second bodies 4 and the saw blade between the rst body and said latch pin, and means limiting the retractable movement of the latch pin. 2. The invention described in claim 1 wherein said engaging means comprises a grooved mem, ber interposed between said rst body and the saw blade, and means on said rst member and said grooved member cooperating to restrain the two from relative rotation.

AARON DAVIES.

ELMER SMITH.

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